Question

3. (x - 5)(x + 2) = (x + 4)(x - 7) + 18
Докажите тождество

Answer 1

Объяснение:

${x }^{2} + 2x - 5x - 10 = {x}^{2} - 7x + 4x - 28 + 18 \\ 2x - 5x + 7x - 4x = 10 - 28 + 18 \\ 0 = 0$