Question

CAN SOMEONE HELP ME WITH THIS WORD PROBLEM PLEASE< ITS CONFUSING ME:( Andrew factored the expression -4x^3+2x^2+8x as -2x(4x^2-2x-8) . But when Melissa applied the distributive law and multiplied out -2x(4x^2-2x-8), she got -8x^3+4x^2+16x ; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this better. Explain your reasoning and correctly factor the original expression, if possible. If the expression is prime, so state.

Answer 1

if anyone here is good with word problems please help!:(

Answer 2

explain if possible but if not thats fine with me I just want this word problem solved and I do need to know how to do it

Answer 3

andrews factors are wrong

Answer 4

umm

Answer 5

I just need help solving it please, its driving me crazy

Answer 6

-4x^3+2x^2+8x = 2x(x - 2x^2 +4)

Answer 7

oooops, i mean when he factor out the -2x he only devided the equation by -x and forgot the 2, he must also devide it by 2 to get the correct factors.

Answer 8

can you work it for me please:)

Answer 9

-4x^3+2x^2+8x ----> so our factor is -2x

devide every numberby -2x

-2x(2x^2-x-4)

Answer 10

so thats the answer?

Answer 11

yup,

:-)

Answer 12

I thought the answer was -2x^2-4?

Answer 13

oh so the answer is -2x(2x^2-x-4)?

Answer 14

no, the right answer is -2x(2x^2-x-4),
trust me,

:-)

Answer 15

oh my gosh thank you, you are a life saver I'm not joking:):):)

Answer 16

hahaha, thank you, and your welcome!

:-)

Answer 17

no thank you:-)