Question

Hello, I am trying to help my son with his algebra! but i am just having hardest time! can someone please help me?

Answer 1

Hi @janice1989
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Answer 2

how can we help you ? do you have any specific qustion ?

Answer 3

Yes can you give me a min? I am not sure how to really work this nad help my son, he has special needs! so he has hard time understanding it and im just stuck! and the teachers dont help at all! im just os stressed out!

Answer 4

don't worry, i will try my best to help you :)

Answer 5

you just post the question you have difficulty with.

Answer 6

Okay, Sorry it took so long to reply he got one asnwer right hold on whille i type the ones we need help with! What is your name?

Answer 7

my name is hartnn, janice :)
you can call me that

Answer 8

Okay!

Answer 9

The expression 5x^2+x-10 has ___ terms and a constand of ____

Answer 10

Oh i forgot answers

Answer 11

3,-10
3,10
6,-10
6,10

My son said B

Answer 12

3 terms are correct!
5x^2 -> one term
+x ->2nd term
-10 -> 3rd term

but the constant is the term with no ''x" in it, which is ... ?

Answer 13

-10 he said

Answer 14

and he is correct! :)

Answer 15

So the answer would be A than correct?

Answer 16

yes, A would be correct.

Answer 17

He is smiling ear to ear he got it right! you can explain it a lot better than i could, there is some more if you dont mind helping with !

Answer 18

i don't mind, at all :)

Answer 19

Janice, thanks for using OpenStudy. Do tell other parents about us. Hartnn is one of our senior, most skilled and patient OpenStudiers! There are many like him on the site to help. They do it because they love Math and helping young learners.

Answer 20

the expression 9x^2-5x-7 has __ terms and a constant of ___

3,-7
5,-7
3,7
-5,7

He said there is 5 terms and a constant of -7 since its right after the x. so he said it would be B correct?

Answer 21

Good work Hartnn!

Answer 22

I will for sure tell other parents about it! Ive been stuck on this for such a long time, And someone told me about it, this is an amazing website, Do you also do Geometry??
My daughter is doing geometry and also has special needs she has Aspergers and is having such a hard time with it.. and she is just stressed and all!

Answer 23

thank you for the appreciations,
yes, i do geometry too :)

lets count the terms in , 9x^2-5x-7

9x^2
-5x
-7
how many ?

Answer 24

Than after we finish this up maybe later on you could help my daughter?
And he said 3 :)

Answer 25

so instead he said would it be A than?

Answer 26

A is correct :)

Answer 27

Woohoo you are amazing!!!

Answer 28

In 6x^4-3y+5x^4-10 what are the like terms in the expression choose all that apply..

6x^4
-3y
5x^4
-10
he said all of them

Answer 29

you will find many amazing users here on OpenStudy, willing to help you as much as i am :)

Answer 30

like terms are those which have same exponent of 'x'

like
x^3, -3x^3, 8x^3 .... (one set of like terms)
x,4x,9x,-x,....
and constants like 4,8,0,-1,....

Answer 31

in 6x^4-3y+5x^4-10
which terms have same exponent of x ?

Answer 32

so would it be A & C

Answer 33

does your boy say/agree with A and C too ?

Answer 34

Yeah he said that, i am just typing for him because he is little bit slow on typing! :D

Answer 35

tell him he is absolutely correct :)

Answer 36

Okay :D hold on he is working on next one to see if he can get it, who would have known a stranger online could help so much more than a teacher!

Answer 37

now you know :)

Answer 38

Simplify : 7x^2+2x^2
7x^2
9x^2
14x^4
9x^4
He said he is not sure what to do can you explain it step by step?
He said it would either be A or B since the top number are both 2. or do you add them together?

Answer 39

He said would it be B? since 7+2 = 9??

Answer 40

the top number (here 2) is called the exponent.
does he know what an exponent is ?

and yes, B is correct, because
7x^2+2x^2 = (7+2)x^2 = 9x^2

Answer 41

He said hes heard of it, but isnt really sure what it is.

Answer 42

i'll explain,

x^n, x is called the 'base' and n is called the exponent.
x^n implies , multiplying 'x' to itself, 'n' times.

we take an example :
2^4 will imply multiplying 2 4 times = 2*2*2*2 = 16

similarly, x^2 will imply multiplying x with itself twice, x*x

got this ?

Answer 43

he said oh that is what exponent is i know now! lol. Thank you, hes working on the next one :)

Answer 44

Subtract the second expression from the first (5x^2-3x+5)-(3x^2-4x-7)

2x^2+x+12

2x^2-7x+12

8x^2+x+12
2x^2+x-2

He said would it be B?

Answer 45

why B , how did he get co-efficients like 2,-7 and 12 ?

Answer 46

He says he dont know, i think he was guessing. He does that a lot. Im sorry!

Answer 47

(5x^2-3x+5)-(3x^2-4x-7)
= 5x^2 -3x +5 -3x^2 - (-4x) - (-7) {by distributing the negative}
= 5x^2 -3x +5 -3x^2 +4x +7 {because negative times negative becomes positive!}
then we identify like terms.

but is this much clear ?

Answer 48

he said for like terms would it be 5x^2 -3x -3x^2 and 4x?

Answer 49

for like terms , the exponent of x should be same,

for which terms exponent of x is 2 ?

for which terms exponent of x is 1 ?

Answer 50

note x means x^1 , both mean the same

Answer 51

he said he is confused. he said he dont get that,

Answer 52

ok, the 5x^2 and -3x^2 has exponent of 2
so these are like terms and we can combine them in this way,

5x^2-3x^2 = (5-3)x^2 = 2x^2

got this?

Answer 53

got it he said

Answer 54

cool,
from this : 5x^2 -3x +5 -3x^2 +4x +7

the other like terms are -3x and +4x (because they both contains just x with it, not x^2 or x^3 .....)

so we can combine them like :
-3x+4x = (-3+4) x = ... ?

Answer 55

he said uh he thinks you can combine them not 100% sure

Answer 56

yes, they can be combined because they both have same exponent (=1 here)
so, -3x+4x = (-3+4) x = -x

lastly, what remains are just constants, 7+5 , which =12

Answer 57

ok he got this,

Answer 58

he understands whats next step?

Answer 59

so, finally, putting the results together,
2x^2-x+12

Answer 60

ok got it

Answer 61

distribute and simplify 7(2x-4)+2(3x+1)

20x+26
20x-26
14x-28
6x+2

He asked what is it to distribute???

Answer 62

Distribution Property :

a(b+c) = ab+ac


ask if you need an explanation in words....