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Question 959074: What is the solution set of y = x^2 + 2x + 7 and y = x + 7?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! What is the solution set of
y = x^2 + 2x + 7 and y = x + 7?
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Substitute for "y" and solve for "x"::
x^2 + 2x + 7 = x + 7
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x^2 + x = 0
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Factor:
x(x+1) = 0
x = 0 or x = -1
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Solve for "y":
If x = 0, y = 0+7 = 7
If x = 1, y = 1+7 = 8
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Cheers,
Stan H.
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