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Mathematics 19 Online
OpenStudy (anonymous):

4d(2d-9) A 8d-36d B -d C -28d^2 d 8d^2-36d

OpenStudy (anonymous):

@bluediamond1999

OpenStudy (anonymous):

First, let's multiply 4d and 2d. What does 4 times 2 equal? What does d times d equal?

OpenStudy (welshfella):

distribute 4d over the parentheses = 4d*2d + 4d*-9

OpenStudy (anonymous):

8d^2

OpenStudy (welshfella):

- yes thats the first part right

OpenStudy (anonymous):

Correct! Next, let's multiply 4d and -9. What does 4 time -9 equal?

OpenStudy (welshfella):

what about 4d * -9 ?

OpenStudy (anonymous):

-36d

OpenStudy (anonymous):

so is it D

OpenStudy (welshfella):

yes

OpenStudy (anonymous):

Yes. Our answer is 8d^2 - 36d.

OpenStudy (anonymous):

brb i have to go eat i still got a couple questions

OpenStudy (anonymous):

I have to go as well. I will be back in a few minutes. Just tag me in your questions. :-)

OpenStudy (anonymous):

your still here

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