Question

решите уравнение (y+5)(y+2)-(y+3)(y+4) при y=-0,071

Answer 1

Ответ:

-2

Объяснение:

$(y + 5)(y + 2) - (y + 3)(y + 4) = \\ = ( {y}^{2} + 2y + 10 + 5y) - \\ - ( {y}^{2} + 3y + 4y + 12) = \\ = {y}^{2} + 7y + 10 - {y}^{2} - 7y - 12 = \\ = 10 - 12 = - 2$