Question

(x-4) al cuadrado = (x-5) al cuadrado - 15

Answer 1

Explicación paso a paso:

${(x - 4)}^{2} = {(x - 5)}^{2} - 15$

${(x)}^{2} - 2(x)(4) + {(4)}^{2} = {(x)}^{2} - 2(x)(5) + {(5)}^{2} - 15$

${x}^{2} - 8x + 16 = {x}^{2} - 10x + 25 - 15$

${x}^{2} - 8x + 16 - {x}^{2} + 10x - 10 = 0$

$2x + 6 = 0$