Question

What is the factored form of the following expressions?

x2 – 10xy + 24y2
A. (x + 6y)(x + 4y)

B. (x – 2y)(x + 12y)

C. (x + 2y)(x – 12y)

D. (x – 6y)(x – 4y)

Answer 1

I think the answer is b

Answer 2

Not quite. What are factors of 24 that add up to -10?

Answer 3

6 and 4

Answer 4

so the answer is going to be d

Answer 5

Yes, but just so you know, the factors were -6 an -4 because they add up to -10.

Answer 6

i know thanks. you going to be around for a while?

Answer 7

Probably for a little longer.

Answer 8

can you help me on this next one?
54c3d4 + 9c4d2
A. 9c3d2(d2 + 6c)

B. 9c3d2(6d2 + c)

C. 9c4d2(d2 + 6)

D. 9c4d2(6d2 + 1)

Answer 9

What is the GCF of 54 and 9?

Answer 10

9

Answer 11

Ok. What is the GCF of c^3 and c^4?

Answer 12

c2

Answer 13

Um no. Think of it this way.
c^3 = c * c * c
c^4 = c * c * c * c
See how there are 3 that can be taken out of both?

Answer 14

ok

Answer 15

How about the GCF of d^4 and d^2?

Answer 16

d^2

Answer 17

Alright. You're GCF is 9c^3d^2
\[9c^{3}d^{2}(\frac{54c^{3}d^{4}}{9c^{3}d^{2}} + \frac{9c^{4}d^{2}}{9c^{3}d^{2}})\]

Answer 18

Can you finish this off?

Answer 19

the answer is gooing to be b. 9c3d2(6d2 + c)

Answer 20

Yup :)

Answer 21

thanks

Answer 22

np :)