find the product of

label Mathematics
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schedule 1 Day
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-12x^3(2x^7 + 9x6^3)                    My answer is -24x^10 - 108^6   is this correct?

11x^3(6x^6 + 7x^2 -9)                   My answer is 66x^9 + 77x^5 - 99x^3  

11x^8 (2x^9 +4x^8 - 8)                      ?

May 12th, 2015

answer to the second one is correct, i.e, 66x^9 + 77x^5 - 99x^3

answer to the third one is  22x^17 + 44x^16 - 88x^8

I want you to see if there's a typo in problem 1. ( 9x6^3 - is it the last expression, I mean tell me if its x or a multiplication sign.)

May 12th, 2015

yes it should be 9x^3

May 12th, 2015

I agree

the answer would be     -24x^10 - 108x^6

Good Luck.

May 12th, 2015

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May 12th, 2015
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May 12th, 2015
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