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How do you solve the simultaneous equations x squared add y squared equals 9 and x plus y equals 2 and working out please?
x^2 + y^2 = 9 eq(1)
x + y = 2 eq (2)
thus
y = 2-x
substitute into (1)
x^2 + (2-x)^2 = 9
x^2 +4 -4x +x^2 = 9
2x^2 -4x -5 = 0
x = (-b +/- root(4ac)) / 2
x =( 4 + 7.483) / 4 = 2.87
y = -0.87
What else can I help you with?
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The solutions are: x = 4, y = 2 and x = -4, y = -2
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What are the solutions to the simultaneous equations of x -2y equals 1 and 3xy -y squared equals 8?
They are: (3, 1) and (-11/5, -8/5)
What are the solutions to the simultaneous equations of x squared plus y squared equals 20 and 2y minus x equals 0?
The solutions are: x = 4, y = 2 and x = -4, y = -2
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What is the system of equations set in order pairs 3x plus 4y equals 38 5x - 5y equals -30?
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9x-3y equals 24 y equals 3x-8 the system?
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Another straight line equation is needed such that both simultaneous equations will intersect at one point.
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