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2 votes
(PLEASE HELP) Find the product of

(x+4)(x2+7x).

2 Answers

2 votes


\huge \underline{ \sf \: Solution}


(x + 4)( {x}^(2) + 7x) \\ = x( {x}^(2) + 7x) + 4( {x}^(2) + 7x) \\ = {x}^(3) + {7x}^(2) + {4x}^(2) + 28x \\ = {x}^(3) + {11x}^(2) + 28x


\huge\underline{\sf Answer:}


{x}^(3) + {11x}^(2) + 28x

User Gulshan Aggarwal
by
4.6k points
1 vote

Answer:

x³ + 11x² + 28x

Explanation:

(x + 4)(x² + 7x)

Each term in the second factor is multiplied by each term in the forst factor, that is

x(x² + 7x) + 4(x² + 7x) ← distribute parenthesis

= x³ + 7x² + 4x² + 28x ← collect like terms

= x³ + 11x² + 28x

User Eric Marcos
by
4.2k points