26-04-2017
Mathematics

contestada

f(x) = 4x2 - 8x + 1 and g(x) = 3x2 - 7x - 6
find f(x) and g(x)

A) x2 - x + 7
B) x2 + x + 7
C) x2 - x - 7
D) x2 - 15x - 5

Respuesta :

mperemsky mperemsky

26-04-2017

Solve the system of equations

4x2 - 8x + 1
3x2 - 7x - 6

Multiply the 2nd line by -1

4x2 - 8x + 1
-3x2 + 7x + 6

Add the lines together

x2 -x + 7

Answer: a)

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