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1. The positive difference between two consecutive even perfect squares is 268. Compute the larger of the two squares.

 

2. If x+2y=4 and xy=-8, what is the value of x^2+4y^2?

 Oct 12, 2020
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1 - 68^2  -  66^2 =4,624  -  4,356 = 268

 Oct 12, 2020

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