Let f(x)=3x^2-x+2 and g(x) = 5x^2-1. Find f(g(x)). HURRY PLEASE

asked Mar 14, 2017 37.0k views

1 vote

by Hinna

7.2k points

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6 votes

Answer:

3x^2-15x-1

Explanation:

Albator answered Mar 15, 2017

6.2k points

5 votes

f(x)=3x²-x+2
g(x)=5x²-1
f(g(x))=3(5x²-1)²-(5x²-1)+2
=3(25x⁴-10x²+1)-(5x²-1)+2
=75x⁴-30x²+3-5x²+1+2
=75x⁴-35x²+6

Answer: f(g(x))=75x⁴-35x²+6

Abdelhakim answered Mar 18, 2017

6.7k points

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