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September 4, 2015
Posted by **bryan** on Tuesday, December 16, 2008 at 1:28am.

1)8t^2(t-t^2+7t^3)

My Answer: 8t^3+-8t^4+56t

- Math Check -
**gr**, Tuesday, December 16, 2008 at 1:36amThe first two terms are correct in your answer but the exponent for last term is wrong. When you are multiplying the exponents are added. So t^2.t^3 = t^(2+3) = t^5

so answer will be:

8t^3 - 8t^4 + 56t^5