Verify that the solutions of the simultaneous equations
x2+y2=20 x^2 + y^2 = 20 x2+y2=20 3x=2−y 3x = 2 - y 3x=2−yare x=−0.8x=-0.8x=−0.8, y=4.4y=4.4y=4.4 and x=2x=2x=2, y=−4y=-4y=−4.
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