What is the standard form of y= (2x-3)(x+7)(-3x-2)?

1 Answer
Tina T.
Jul 8, 2017

y=-6x^3-37x^2+41x+42

Explanation:

Multiply the first two expressions using the FOIL method.
(2x-3)(x+7)
2x^2+14x-3x-21 ---> combine like terms
2x^2+11x-21

Here is what you have now: y=(2x^2+11x-21)(-3x-2)

Using the same method as before, multiply the expressions together.
(2x^2+11x-21)(-3x-2)
-6x^3-33x^2+63x-4x^2-22x+42 ---> combine like terms
-6x^3-37x^2+41x+42

Your final answer is y=-6x^3-37x^2+41x+42.

I hope this helps a lot! :)

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