Question

(1-х)(1-х)=(х+4)(х-4) уравнение

 

Answer 1

1+x^2-2x=x^2-16

1-2x=-16

2x=17

x=8,5

Answer 2

(1-х)(1-х)=(х+4)(х-4)

 

1-x-x+x^2  = x^2 -4x+4x-16

1-2x+x^2-x^2=-16

-2x=-17

x=8,5