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Solve the following simultaneous equation: x^2 + y^2 = 9 X+y=2

X 2.87 or -0.87y-0.87 or 2.87

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How do I solve the simultaneous equations 2x - y = 3 and 3x + y = 9

Complete the square on the equation (x^2)-4x-3

5x-7 = 3x + 3, solve x

a)Rearrange the folowing to make m the subject; 4(m-2) = t(5m+3)