Solve the simultaneous equations: x^2 + y^2 = 25 and y − 2x = 5
x2+y2=25, y-2x= 5 y = 5+2x -----> y2 = (5+2x)2 = 25 + 20x +4x2 x2 + 4x2 + 20x + 25 = 25 5x2 + 20 x = 0 x = 0 y = 5+(2*0) y=5
AG
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