Question

Which quadratic equation is equivalent to (x-4)2-(x-4) - 6 = 0?

Answer 1

x = 2 or 7

Explanation:

(x-4)² - (x-4) - 6 = 0

x²-8x+16-x+4 -6 = 0

x²-9x+14 = 0

(x-2)(x-7) = 0

∴x = 2 or 7

Answer 2

x=4

Explanation:

2x-8-x+4-6=0

or,2x-x-8+4=0

or,x-4=0

or,x=0+4

•°•x=4

ans