Precalculus help please

Mathematics
Tutor: None Selected Time limit: 1 Day

Let f(x)=x^2+3 and g(x)=2x-7. Find and simplify each expression :(f-g)(-2). Also find g(a+2)

May 3rd, 2015

so 

(f - g)(x)= (x² + 3) - (2x - 7) = x² - 2x + 10 

for x = - 2 

so : (f - g)(- 2) = 4 + 4 +10 = 18 

and 

g(a + 2)= 2 (a + 2) - 7 = 2a + 4 - 7 = 2a - 3 

GOOD LUCK 

please if you have an other homework call me first i will give you the best answer 

May 3rd, 2015

Okay I will.

May 3rd, 2015

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May 3rd, 2015
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May 3rd, 2015
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