Question

Решите
3(x+1)(x-1)=2(x-2)(x+2)+x2(во 2 степени)+2x

Answer 1

3(x² -1) =2(x² -4) +x² +2x
3x² -3 =2x² -8 +x² +2x
3x² -3x -3x² +8 -2x =0
-5x = -8
x =8/5
x =1.6