Question

Решите примеры:
5x²-3xy-2xy+x²=?
3t²-5t²-11t-3t²+5t+11=?
7a²b-5a²b+ab²+2ab²=?

Answer 1

$1) 5x^{2} -3xy-2xy+x^{2} =6 x^{2} -5xy=x*(6x-5y)$
$2) 3 t^{2} -5t ^{2} -11t-3t ^{2} +5t+11=-5t ^{2} -6t+11=-5t*(t-1)-11*(t-1)=(-5t-11)*(t-1)$
$3) 7a ^{2} b-5a ^{2} b+ab ^{2} +2ab ^{2} =2a ^{2} b+3ab ^{2} =ab*(2a+3b)$