Question

Solving by factoring (check and help)

Answer 1

Sorry that it's upside down! Idk how to turn it

Answer 2

How did u figure that out?

Answer 3

And yes!

Answer 4

Can you check my other ones? I dont really know what Im doing

Answer 5

6x^2-30x=0
We see 6x in common between both of them.
So factor out 6x:
6x(x-5)=0
x=0, 5

And I checked your other 3, they are all correct.

Answer 6

What about these?

Answer 7

LIke can you take me step by step?

Answer 8

3x^2-x = 0
x (3x-1) = 0
x = 0, 1/3 ----> this is for the 1st part

Answer 9

Hahah I like your username @dumbcow

Answer 10

this will help for questions #3,4
difference of squares
\[a^{2} -b^{2} = (a+b)(a-b)\]

Answer 11

haha thank you :)

Answer 12

Okay hold on

Answer 13

So what do I do next @Yttrium

Answer 14

Hold on @dumbcow because Im gonna try 3 and 4 soon

Answer 15

So for #3 would it be: (s-144)(s+144) ?

Answer 16

not quite....b^2 = 144
what is sqrt of 144 ?

Answer 17

12

Answer 18

yep
= (s+12)(s-12)

Answer 19

And what do I do next?

Answer 20

umm to finish solving, set each factor equal to 0
s+12 = 0
s-12 = 0

Answer 21

s = -12 and 12?

Answer 22

correct done, on to next one

Answer 23

Ohh!:) that's easy then and okay

Answer 24

#4 (6w-11)(6w+11)

Answer 25

yes good job, now split up factors and solve

Answer 26

how?

Answer 27

just like you did on last one

Answer 28

11/6 ?

Answer 29

good what about 2nd answer

Answer 30

-11/6

Answer 31

yes

Answer 32

and how do i write my answer for those type of problems?

Answer 33

w = -11/6
w = 11/6

Answer 34

oh okay:) thanks! and how would I solve:

10y^2 - 450 = 40y

Answer 35

It'd be 10y^2 + 40y - 450 = 0

Answer 36

ok start by factoring out common factors like 10
...also is that a typo , it should be 10y^2 -40y-450 =0 right?

Answer 37

Ohh! it's -40y not positive

Answer 38

so divide everything by 10?

Answer 39

yes

Answer 40

y^2 + 4y - 45 = 0?

Answer 41

\[y^{2}-4y -45 = 0\]
:)
now what numbers multiply to -45 but add to get -4 ?

Answer 42

10y^2 - 450 = -40y
+40y +40y

10y^2 + 40y - 450 = 0
------------------
10

this now equals

y^2 + 4y - 45 = 0

___ x ___ = -45
____ + ____ = 4

-5 and 9

Answer 43

ok so it is +4y ?
anyway yes you got it :)
-5 and 9

Answer 44

(y-5)(y+9) = 0

Answer 45

yes and okay thank you!!

Answer 46

yw gotta go

Answer 47

can u help me with one more ??