Question

Choose the correct simplification of the expression (3x − 6)(2x^2 − 4x − 5)

6x^3 − 24x^2 + 9x − 30
6x^3 + 9x + 30
6x^3 − 24x^2 + 9x + 30
6x^3 − 24x^2 + 39x + 30

Answer 1

Use the foil method
(3x − 6)(2x^2 − 4x − 5)
3x(2x^2-4x-5)-6(2x^2-4x-5)

Solve this and tell me what you get.

Answer 2

@jenniferjuice

Answer 3

wait if i were to use the foil methos
3x(2x^2 - 4x - 5) - 6 (2x^2 - 4x - 5)
first would i multiply 3x and -6 ?

Answer 4

You have to mutiply 3x with with whole second bracket and -6 with the whole 2nd bracket

3x(2x^2 - 4x - 5) What do you get? @jenniferjuice

Answer 5

so ....
-18x

Answer 6

and 3x * -5

Answer 7

3x*2x^2=6x^3
3x*-4x=-12x^2
3x*-5=15x

Answer 8

Now multiply this
6 (2x^2 - 4x - 5)
-6*+2x^2=-12x^2
-6*-4x=-28x
6*-5=-30

Answer 9

i got
-18x - 15x + 30 +25

Answer 10

So,
3x(2x^2 - 4x - 5) - 6 (2x^2 - 4x - 5)
6x^3-12x^2-15x-12x^2+24x+30

Answer 11

Now bring all x^3 values together,all x^2 values together and all x values together and numericals together