How do you multiply #(x + 6) ( x ^ { 3} - 3x + 7)#?

1 Answer
smendyka
Nov 26, 2016

#x^4 + 6x^3 - 3x^2 - 11x + 42#

Explanation:

First, multiply each term in the parenthesis by each term in the right parenthesis:

#(x*x^3) - (x*3x) + (7*x) + (6*x^3) - (6*3x) + (6*7) =>#

#x^4 - 3x^2 + 7x + 6x^3 - 18x + 42#

Next, ombine like terms to finishL

#x^4 + 6x^3 - 3x^2 - 11x + 42#

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