Respuesta :

Step-by-step explanation:

X^2-2=2(x^2+4x-5)-(x-4)(x-4)

X^2-2=2(x^2+4x-5)-(x^2-8x+16)

X^2-2=2x^2+8x-10-x^2+8x-16

2x^2-x^2-x^2+8x+8x-10-16+2=0

16x-24=0

16x=24

X=2

RELAXING NOICE
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