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5 May, 14:55

If the legs of a right triangle are given by x2 - y2 and 2xy, then which expression equals the hypotenuse? choose all that apply. x2 y2 (x2 y2) 2 (x2 - y2) 2 (2xy) 2

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  1. 5 May, 17:42
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    Hypothenus = sqrt ((x^2 - y^2) ^2 + (2xy) ^2) = sqrt (x^4 - 2x^2y^2 + y^4 + 4x^2y^2) = sqrt (x^4 + 2x^2y^2 + y^4) = sqrt (x^2 + y^2) ^2 = x^2 + y^2
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