Recognize as difference of squares: Recognize the expression y2−4x6 as a difference of squares.A difference of squares is a binomial of the form a2−b2, which factors into (a+b)(a−b).Here, y2 is a perfect square (a2) and 4x6 is also a perfect square (b2) since 4x6=(2x3)2.
Write expression as difference: Write the expression as a difference of squares.y2−4x6=y2−(2x3)2Now we can apply the difference of squares formula.
Factor using formula: Factor the expression using the difference of squares formula.y2−(2x3)2=(y+2x3)(y−2x3)This is the completely factored form of the expression.
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