Question

(x+7)(x-2)-(x+4)(x+3)=-2.

Answer 1

Ответ:

$(x + 7) \times (x - 2) - (x + 4) \times (x + 3) = - 2 \\ x {}^{2} - 2x + 7x - 14 - ( {x}^{2} + 3x + 4x + 12 ) = - 2 \\ {x}^{2} + 5x - 14 - {x}^{2} - 7x - 12 = - 2 \\ - 2x - 26 = - 2 \\ 2x = 2 - 26 \\ 2x = - 24 \\ x = - 24 \div 2 \\ x = - 12$

Answer 2

Ответ:

х = -12

Объяснение:

(x+7)(x-2) - (x+4)(x+3) = -2.

х²-2х+7х-14 - (х²+3х+4х+12) = -2

х²+5х-14 - (х²+7х+12) = -2

х²+5х-14-х²-7х-12 = -2

-2х-26 = -2

-2х = -2+26

-2х = 24

х = 24 / (-2)

х = -12