Question

QF Q3d.) Find the following function

Answer 1

$5(4x-3)^2 - 3$ 

$5(16x^2 - 2(3)(4x) + 9) -3$ 

$5(16x^2-24x+9)-3$ 

$80x^2-120x+45-3$ 

$80x^2-120x+(45-3)$ 

$80x^2-120x+42$     $x=0$ 

$80(0)^2-120(0)+42$ 

$= 42$

Answer 2

5(4x-3)^2 - 3
5(16x^2 - 2(3)(4x) + 9) -3
5(16x^2 - 24x + 9) -3
80x^2 - 120x + 45 - 3
80x^2 - 120x + 42
80(0)^2 - 120(0) + 42
42