Question

Choose the correct simplification of (6x − 5)(2x2 − 3x − 6).

12x3 + 28x2 + 21x + 30
12x3 − 28x2 − 21x + 30
12x3 + 28x2 − 21x + 30
12x3 − 28x2 − 21x − 30

Answer 1

Am I right with B?

Answer 2

@axie

Answer 3

@joe348

Answer 4

\[6x \times 2x^2=12x^3\]
\[6x \times -3x=-18x^2\]
\[6x \times -6=36\]
and if you do the same for the rest you should get

\[12x^3-18x^2-36x-10x^2+15x+30\]

you need to simplify and combine like terms

\[12x^3-28x^2-21x+30\]

so yeah I would agree with your answer

Answer 5

thank you

Answer 6

No problem bro, tbh you should trust yourself because you seem pretty smart anyways