1) (x – 3)(x + 7) - (x + 7)(x – 8) = 0; 2) (4x -9)(x - 2) + (1 - x)(x

August 2021 0 5 Report

1) (x – 3)(x + 7) - (x + 7)(x – 8) = 0; 2) (4x -9)(x - 2) + (1 - x)(x - 2) = 0;
3) 0,2x (x – 5) + 8(x – 5) = 0;
4) 7(x – 7) - (x – 7)2 = 0.