(x+4)²-8 = (x-4)(x+4)
x²+8x+16-8 = x²-16
x²+8x+8 = x²-16
8x+8 = -16 |:8
x+1 = -2
x = -2-1
x = -3
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(x+4)²-8 = (x-4)(x+4)
x²+8x+16-8 = x²-16
x²+8x+8 = x²-16
8x+8 = -16 |:8
x+1 = -2
x = -2-1
x = -3
x^2+8x+16-8=x^2-16
8x=-16-8
8x=-24/:8
x=-3
(x+4)kwadrat - 8 = (x-4)(x+4)
(x+4)^ - 8 = (x-4)(x+4)
x^ + 8x + 16 - 8 = x^ - 16
x^ +8x -x^ = -16 -16 +8
8x = -24
x = -3