Question

Решите уравнение:
(x+5)²-(x-1)²=48

Answer 1

x²+10x+25-(x²-2x+1)=48
x²+10x+25-x²+2x-1=48
12x=48-25+1
12x=24
x=2

Answer 2

x2+10х+25-(-2х+1)-48=0

x2+10x+25-+2x-1-48=0

12x-24=0

12x=24/:12

х=2