2514x2y=25.3y414x2y.3y4=75y442x2y52514x2y=25.3y414x2y.3y4=75y442x2y5
1421xy5=23xy5=2.14x3xy5.14x=28x42x2y51421xy5=23xy5=2.14x3xy5.14x=28x42x2y5
__________
52x+6=52(x+3)=5(x-3)2(x-3)(x+3)52x+6=52(x+3)=5(x−3)2(x−3)(x+3)
3x2-9=3.22(x-3)(x+3)=62(x-3)(x+3)3x2−9=3.22(x−3)(x+3)=62(x−3)(x+3)