How do you find the GCF of $21 x^{2} y, 63 x y^{2}$ $21x^2y, 63xy^2$ ?

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Answer 1 · 2017-01-06T16:31:25

21xy

factorize 21, we get = $3 \times 7$ $3xx7$

factorize 63, we get = $3 \times 3 \times 7$ $3xx3xx7$

highest common factor between $x^{2}, x = x$ $x^2 , x = x$

highest common factor between $y, y^{2} = y$ $y, y^2 = y$

GCF = $3 \times 7 \times x \times y$ $3xx7xx x xx y$

How do you find the GCF of 21x2y,63xy221x^2y, 63xy^2?