y=4x^2-4x-8 using the quadratic formula
Answer:
4(x+1)(x-2)
Step-by-step explanation:
factor the expression: 4x^2-4x-8
4(x^2-x-2)
write as a difference: 4(x^2+x-2x-2)
factor out x: 4(x(x+1)-2(x+1)),
then factor out x+1:
4(x+1)(x-2)