Question

2. Write y = (x - 2)2 – 8 in standard form?

A. y = x2 - 4x - 4
B. y = x2 – 12x + 4
C. y = x² + 4x - 4
D. y = -x2 - 4x + 4

Answer 1

A

Explanation:

y = (x - 2)² - 8

y = x² - 4x + 4 - 8

y = x² - 4x - 4

Answer 2

y = x^2 -4x -4

Explanation:

y = (x - 2)^2 – 8

y = (x-2) (x-2) -8

Foiling

y= x^2 -2x -2x +4 -8

Combining like terms

y = x^2 -4x -4