F(x)= sqrt of 5x+7 and g(x)= the sqrt of 5x-7 find (f+g)(x) OPTIONS: A) sqrt 10x B) x sqrt 10 C) sqrt of 5x+7+ sqrt of 5x-7 D) 5x

asked May 26, 2017 229k views

2 votes

F(x)= sqrt of 5x+7 and g(x)= the sqrt of 5x-7

find (f+g)(x)
OPTIONS:
A) sqrt 10x
B) x sqrt 10
C) sqrt of 5x+7+ sqrt of 5x-7
D) 5x

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2 votes

f(x) = √(5x + 7)

g(x) = √(5x - 7)

(f + g)(x) = f(x) + g(x)

(f + g)(x) = √(5x + 7) + √(5x - 7)

Answer: C)

Joslin answered May 31, 2017

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