Question

Решите уравнения ))))))

Answer 1

(2x - 1)^2 - 4( x - 2)(x + 2) = 0;
(4x^2 - 4x + 1) - 4(x^2 - 4) = 0 
4x^2 - 4x + 1 - 4x^2 + 16 = 0 
- 4x + 1 7 = 0 
-4x = - 17
x = 17/4 = 4,25

Answer 2

(2x-1)^2-4(x-2)(x+2)=0
4x^2-4x+1-4(x^2-4)=0
4x^2-4x+1-4x^2+16=0
-4x=-17
x=17/4
x=4,25