joejgovea
joejgovea joejgovea
  • 06-12-2018
  • Mathematics
contestada

If f(x)=2x-5 and g(x)=x²+1 , what is g(f(x))

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akephd
akephd akephd
  • 06-12-2018

Answer:

I believe it would be 4x^2-20x+26

Step-by-step explanation:

Substitute the f(x) equation in where the x is in the g(x) equation, so...

g(f(x)) = (2x-5)^2+1 = (2x-5)(2x-5)+1 = 4x^2-20x+26.

If you want, you could factor out a 2 also to get 2(2^2-10x+13)

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