Question

(3-x)(2+x) -(4-x)(3+x) =5-x
очень срочно ХЕЛП ​

Answer 1

Объяснение:

$(3 - x)(2 + x) - (4 - x)(3 + x) = 5 - x \\ 6 + x - x {}^{2} - (4 - x)(3 + x) = 5 - x \\ 6 + x - x {}^{2} - (12 + x - x {}^{2} ) = 5 - x \\ 6 + x - x {}^{2} - 12 - x + x {}^{2} = 5 - x \\ - 6 + x - x {}^{2} - x + x {}^{2} = 5 - x \\ - 6- x {}^{2} + x {}^{2} = 5 - x \\ - 6 = 5 - x \\ 5 - x = - 6 \\ - x = - 6 - 5 \\ - x = - 11 \\ x = 11$