Question

[8.03] What are the factors of x2 − 3x − 28?

(x + 7)(x − 4)

(x − 7)(x + 4)

(x + 2)(x − 14)

(x − 2)(x + 14)

Answer 1

Wait, isn't it b?

Answer 2

yeah ,sorry it s b

Answer 3

(x-7)(x+4)

Answer 4

Oh, ok, thx, lol, anbother one?

Answer 5

yep lol

Answer 6

8.07] Jose factored 27x2 + 48y2 using the following steps.

27x2 + 48y2 = 3(9x2 + 16y2)
= 3(3x + 4y)(3x − 4y)

Determine whether Jose factored this binomial correctly. If not, use complete sentences to explain what he did wrong and how he could check his factors for accuracy in the future.

Answer 7

BTW, Thx, lol! I need this. :)

Answer 8

it is wrong

Answer 9

Oh, okay, thx, how?

Answer 10

I agree, with his calc it would return a value of 27x2 - 48y2

Answer 11

Can you tell me how?

Answer 12

(3x+4y)(3x-4y)
9x2 - 12xy + 12xy -16y2
Then simplify
9x2 - 16y2

Answer 13

OMG, thx so much, you guys are so helpful!!!!! :))) ♥♥♥