Given the definitions of f (x) and g (x) below, find the value of g (f (-1)).

f (x) = - 4x - 7

g (x) = x² + 7x - 2

Question

Mathematics

Alexis Krause

16 January, 20:07

Given the definitions of f (x) and g (x) below, find the value of g (f (-1)).

f (x) = - 4x - 7

g (x) = x² + 7x - 2

+1

Answers (1)

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Alfred Gilmore · Answer 1

(x) = (x-7) (x-4)

g (x) = x (2) + 7x - 2

Now find a common denominator. (x+10) (x-4) is a good one.

x-16 / (x+10) (x-4) + x-4 / (x+10) (x-4)

2x-20 / (x+10) (x-4)

Given the definitions of f (x) and g (x) below, find the value of g (f (-1)).f (x) = - 4x - 7g (x) = x² + 7x - 2

Given the definitions of f (x) and g (x) below, find the value of g (f (-1)).

f (x) = - 4x - 7

g (x) = x² + 7x - 2