posted by Lavern on .
Please multiply and simplify the answer
I am having trouble with
multiply 3x by each of the terms in the second bracket + 7 times each of the terms in the second bracket
= 12x^3 + 6x^2 + 24x + 28x^2 + 14x + 56
= 12x^3 + 34x^2 + 38x + 56