Question

dado f(x)=4x²-8x+5, hallar f(x+h)-f(x) ​

Answer 1

f(a) = f(x+h)

a=x+h ,

4(x+h)^2 - 8(x+h) +5 -(4x^2 - 8x + 5) => 4x^2 + 4h^2 - 8x + 8h + 5 - 4x^2 + 8x -5

=> 4h^2 + 8h => h( 4h + 8)