equation
posted by James .
Solve algebraically and check
y = x^2  3
x + y = 1

equation 
MathMate
y appears in both equations to the first degree. You can eliminate y by equating the value of y from each equation.
Solve the resulting quadratic equation for x.
Backsubstitute the values of x into the equations to get the corresponding values of y. 
equation 
PsyDAG
Substitute x^2  3 for y in the second equation.
x + x^2  3 = 1
x^2 + x  2 = 0
(x + 2)(x  1) = 0
Find the two possible values for x and insert to find y. Insert both sets of values into second equation to check.
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