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Chapter 1: Q18. (page 49)

Examples 4 and 5 Iff(x)=6x+7 andg(x)=x2鈭�4, find each value. (P. 49)

f(2)+g(鈭�2)

Short Answer

Expert verified

The value of the expression is 19.

Step by step solution

01

Step 1. Apply substitution method to find value of function fx at x=2.

f2=62+7f2=12+7f2=19

02

Step 2. Apply substitution method to find value of function gx at x=−2.

g鈭�2=鈭�22鈭�4g鈭�2=4鈭�4g鈭�2=0

03

Step 3. Calculate the result.

f2+g鈭�2=19+0f2+g鈭�2=19

Therefore, the value off2+g鈭�2 is19.

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