Question

Решите уравнение

(3-x)(2+x)-(4-x)(3+x)=5-x

Answer 1

$(3 - x)(2 + x) - (4 - x)(3 + x) = 5 - x$

$6 + 3x - 2x - x {}^{2} - (12 + 4x - 3x - x {}^{2} ) = 5 - x$

$6 + 3x - 2x - x {}^{2} - 12 - x + x {}^{2} = 5 - x$

$6 + 3x - 2x - 12 - x = 5 - x$

$6 + 3x - 2x - 12 = 5$

$- 6 + x = 5$

$x = 5 + 6$

$x = 11$

Answer 2

Ответ:

x=-11

Объяснение:

(3-x)(2+x)-(4-x)(3+x)=5-x

6+3x-2x-x²-(12+4x-3x-x²)=5-x

6+3x-2x-x²-12-4x+3x+x²=5-x

6+3x-2x-x²-12-4x+3x+x²-5+x=0

-11-x=0

-x=11

x=-11