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02-09-2016
Mathematics

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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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dalendrk dalendrk

02-09-2016

f(x) = √(5x + 7)

g(x) = √(5x - 7)

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

(f + g)(x) = √(5x + 7) + √(5x - 7)

Answer: C)

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