Question

Hey Everyone please help?? I just need to know the answers so i can figure it out by myself :)

1. Factor the expression

x^2 + 7x +10

A. (x+3)(x+4)
B. (x+2)(x+5)
C. (x-2)(x-5)
D. (x+1)(x+7)

2.Factor the expression

x^2 - 3x+2

A. (x+2)(x-1)
B. (x+2)(x+1)
C. (x-2)(x-1)
D. (x-1)(x-3)

3. Factor the expression

-x^2 + 3x + 40

A. -(x+2)(x-20)
B. -(x-5)(x+8)
C. (x-4)(x-10)
D. -(x+5)(x-8)

4. Find the GCF of the expression

3a^2 + 9

A. 3
B. a
C. a+3
D. 3a

5. Find the GCF of the expression

25b^2 - 20b

A. 25
B. 5-b
C. b
D. 5b

Answer 1

Yes its hard tho because i dont know the answers for sure so i want to make sure they are correct

Answer 2

Okay lets work on this @Daisyloveeee

Answer 3

Well you know what... Go to this link they should tell you everything you need to know!

http://www.dummies.com/how-to/content/how-to-factor-a-polynomial-expression.html

Answer 4

Hope this helped! Have a great day!

Also a medal would be much appreciated! Just click best response next to my answer. Thank You!

Answer 5

i got c

Answer 6

Okay.

Answer 7

I have all the answers.

Answer 8

I can help you out.

Answer 9

So do you think the 1st one is c?

Answer 10

both should be positive?

Answer 11

Yes. They should.

Answer 12

yeah i thought so

Answer 13

So when you do that the answer should be...

Answer 14

What?

Answer 15

Which two numbers add up to 7 and multiply to 10? Such numbers are 2 and 5. Thus our equation is (x+2)*(x+5)

Answer 16

use Viet theorem

Answer 17

Right so the answer should be B then.

Answer 18

Now lets do number 2 shall we? @Daisyloveeee

Answer 19

so (x+2) (x+5)

Answer 20

yeah

Answer 21

Right!

Answer 22

what do you think 2 is now?

Answer 23

for second:
Which two numbers add up to -3 and multiply to 2? they are -2 and -1. thus the equation is (x-2)*(x-1)

Answer 24

Right.

Answer 25

C

Answer 26

Now what do you think number 3 is? @Daisyloveeee

Answer 27

oh that guy answered it hahah

Answer 28

What do you think 3 is?

Answer 29

idk im stuck on that one

Answer 30

Okay well you have to factor the minus sign out right?

Answer 31

So when you do that... it is just like simple factoring..

Answer 32

ok

Answer 33

idk is it A? :/

Answer 34

Not to go out of order, but here is number 5:
25b^2-20b
They both have ''b'', so you know your answer has to have a ''b''. You can eliminate A. From the two numbers (25 and 20), the greatest factor that they have in common in is 5. You take out a 5 and get:
5b(5b-4)
You can multiply it out to make sure it is correct. The greatest common factor is:
D. 5b

Answer 35

thanks :)

Answer 36

No problem, Daisyloveeee. :D

Answer 37

the 1st one is b the 2nd one is c the 3rd one is d the 4th one is a and the 5th one is d

Answer 38

1.a