   Chapter 0.3, Problem 17E

Chapter
Section
Textbook Problem

Expand each expression in Exercises 1–22. ( x 2 + x − 1 ) ( 2 x + 4 )

To determine

To calculate: The expanded form of the expression (x2+x1)(2x+4).

Explanation

Given Information:

The provided expression is, (x2+x1)(2x+4)

Formula used:

The distributive law,

(a±b)c=ac±bc

Where, a, b and c are any real numbers.

Calculation:

Consider the provided expression,

(x2+x1)(2x+4)

Apply the distributive law as below,

(x2+x1)(2x+4)=(x2+x1)(2x)+(x2+x1)(4)=(x2)(2x)+(x)(2x)+(1)(2

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