1.34x(x-2y):2 2.10y²:5y 3.9(x-2)(x+5):3(x-2)

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1.34x(x-2y):2
2.10y²:5y
3.9(x-2)(x+5):3(x-2)

1.34x(x-2y):2
=34x²-68y:2
2.10y²:5y=2y