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Jennifer Rodriguez ∙
-3X+Y = 2 becomes Y = 2+3X
-9X + 2Y =2 becomes -9X + 2(2+3X) =2, which we can now solve.
-9X + 4 + 6X = 2
-3X = -2
X = 2/3
Going back to our original equation:
Y = 2+3(2/3)
Y = 4
Michael Scalise ∙
This is clearer if you use fractional powers, at least for the intermediate steps. The fourth root of 32x2y2 is (32x2y2)1/4, or 31/2x1/2y1/2. In other words, the square root of 3xy.
The GCF is x^2y^2.
The GCF is x2y2.