Решите уравнения 1) 2x (5x-7) = 2x²-5

2) (x+4) ²=4x²+5

3) (x-5) ²=3x²-x+14

4) 9x (4x-1) = 3x-1

1) 10x^2-14x=2x^2-5; 8x^2-14x+5=0; D=36; x1=1,25; x2=0,5;

2) x^2+8x+16=4x^2+5;

3x^2-8x-11=0; D=196; x1=-1; x2=22/6=11/3;

3) x^2-10x+25=3x^2-x+14;

2x^2+9x-11x=0; D=169; x1=1; x2=-5,5;

4) 36x^2-9x=3x-1;

36x^2-12x+1=0;

(6x-1) ^2=0; 6x-1=0; 6x=1; x=1/6