Question

Решите уравнение (x+4)^2-x^2=2x+1

Answer 1

(x+4)² -x² =2x+1x²+8x+26-x²-2x=16x=-15x= - 15/6х= - 2.5

Answer 2

(x+4)² -x² =2x+1
x²+8x+26-x²-2x=1
6x=-15
x= - 15/6
х= - 2.5