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=(4y^2 . 7x^2) /( x^2 . 3y)
=(28 x^2y^2)/ (3x^2y) (kemudian x^2/x^2 dan y^2/y , gunakan sifat a^n/a^m= a^n-m)
= (28/3) . x^2-2 . y^2-1 ( jika hanya y berarti pangkatnya 1 yang berarti y^1)
= (28. X^0 . y^1)/3 *(gunakan sifat a^0 =1)
= (28.1.y)/3
=28y/3