Question

Разложите на множители а)25а-ав^2 б)3а^2-6а+3

Answer 1

$25a-ab^2=a(25-b^2)=a(5^2-b^2)=a(5-b)(5+b)$

$3a^2-6a+3=3(a^2-2a+1)=3(a^2-2a*1+1^2)=3(a-1)^2$