Question

$frac{x^2+2x-15}{x-1} =0$

Answer 1

$frac{x^2+2x-15}{x-1} =0 \ left { {{ x^2+2x-15 =0} atop {x-1 neq 0}} right. \ left { {{ x^2+5x-3x-15 =0} atop {x neq 1}} right. \ left { {{ x(x+5)-3(x+5) =0} atop {x neq 1}} right. \ left { {{ (x+5)(x-3) =0} atop {x neq 1}} right. \ left { {{ x=-5 ; x=3} atop {x neq 1}} right. \ x=-5 ; x=3$
Ответ: -5 и 3

Answer 2

а смысл в х=1?