Question

If f(x) =x^2-3x+4, f(x) =2x+1. Find x

Answer 1

Answer:

substitute f(x)=2x+1 in the equation f(x)=x^2-3x+4

so 2x+1=x^2-3x+4

2x+3x=x^2+4-1

5x=x^2+3

x=x^2+3/5