Question

Решите уравнение
(Х+5)^2-(х-1)^2=48

Answer 1

(х+5)²-(х-1)²=48
х²+10х+25-х²+2х-1=48
12х=48-24
12х=24
х=24:12
х=2

Answer 2

${(x + 5)}^{2} - {(x - 1)}^{2} = 48 \\ {x}^{2} + 10x + 25 - ( {x}^{2} - 2x + 1) \\ {x}^{2} + 10x + 25 - {x}^{2} + 2x - 1 \\ 12x + 24 \\ 12(x + 2)$=48
х+2=3
х=1