SOLUTION: f+g and f-g f(x)7x^2+5 g(x)x^2-13

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Question 173864: f+g and f-g
f(x)7x^2+5 g(x)x^2-13

Answer by nycsub_teacher(90) About Me  (Show Source):
You can put this solution on YOUR website!
FIND: f + g and f - g
f(x) = 7x^2+5 g(x)= x^2-13
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f + g = f(x) + g(x)
f + g = 7x^2 + 5 + x^2 - 13
f + g = 8x^2 - 8
===========================
f - g = f(x) - g(x)
f - g = 7x^2 + 5 - (x^2 - 13)
f - g = 7x^2 - 5 - x + 13
f - g = 6x^2 + 8
Understand?