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Pearson Algebra 2 Common Core, 2011

PA

Pearson Algebra 2 Common Core, 2011 View details

Cumulative Standards Review

Exercise 13 Page 493

Substitute the given function rules into the expressions f(x)+g(x).

A

Practice makes perfect

We know that f(x)=5 sqrt(x^2) and g(x)=3 sqrt(x^2). To perform the addition, we should substitute the given function rules for f(x) and g(x).

f(x)=g(x)

f(x)= 5 sqrt(x^2), g(x)= 3 sqrt(x^2)

5 sqrt(x^2) + 3 sqrt(x^2)

Factor out sqrt(x^2)

(5+3) sqrt(x^2)

Add terms

8 sqrt(x^2)

This corresponds to answer A.

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