Question

1)25х^2-9y^2
2)4x^2+12x+9
3)(3x+5)^2
4)(7x-1)^2
5)(5x+10)(5x-1)

Answer 1

1)25х²-9у²=(5х-3у)(5х+3у)
2)4х²+12х+9=(2х+3)²
3)(3х+5)²=9х²+30х+25
4)(7х-1)²=49х²-14х+1
5)(5х+10)(5х-1)=25х²-5х+50х-10=25х²+45х-10