Question

Разложите на множетели 1)x-3y+x²-9y² 2)9m²+6mn+n²-25 4)1-x²+10xy-25y²

Answer 1

1) x-3y+(x-3y)(x+3y)
2) (3m+n-5)(3m+n+5)
3) 1-(x(2) -10xy+256(2)) = 1-(x-5y)(2)