Question: Solve the simultaneous equations by hand, using the method of substitution: x 2 + x + 3y = 15, 3x + 4y = 18. Use

Solve the simultaneous equations by hand, using the method of substitution:
x2 + x + 3y = 15,
3x + 4y = 18.

Use Mathematica to check your result. Since the first equation is a quadratic equation, there will be two solution sets.

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