Question

X^2 - (x+3)(x-3)=3x
(2x-1)^2-4(x-2)(x+2)=0
Решите уравнение

Answer 1

1) 1.x²-x²+9=3x.

2. 3x=9.

3. x=3.

2) 1. 4x²-4x+1-4x²+16=0.

2. 4x=17.

3. x=17/4.

4. x=4,25.