Question

Разложите на множители
1) 75х^2-3у^4
2) 5х^2+5у^2+10ху
3) х^2-3х-у^2-3у

Answer 1

1) 3(25х^2-y^4)=3(5x-y²)(5x+y²)
2)5(x²+2xy+y²)=5(x+y)²
3) (x²-y²)-3(x+y)=(x-y)(x+y)-3(x+y)=(x+y)(x-y-3)