Question

5(x-3)-3(3-x)^2
Разложите на множители

Answer 1

$5(x-3)-3(3-x)^2=5(x-3)-3(3-x)(3-x)= \ =5(x-3)+3(x-3)(3-x)=(x-3)(5+3(3-x))= \ =(x-3)(5+9-3x)=(x-3)(14-3x).$