SOLUTION: Give exact and approximate solutions to three decimal places. X^2-7x+7=0 Exact solutions are Approx. to 3 decimals are Thank you for your help

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Question 176179: Give exact and approximate solutions to three decimal places.
X^2-7x+7=0
Exact solutions are
Approx. to 3 decimals are
Thank you for your help
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-7x%2B7=0
Use the quadratic formula,
x+=+%28-%28-7%29+%2B-+sqrt%28+%28-7%29%5E2-4%2A1%2A7+%29%29%2F%282%2A1%29+
x+=+%287+%2B-+sqrt%28+49-28+%29%29%2F%282%29+
Exact solutions:
x+=+%287+%2B-+sqrt%28+21+%29%29%2F%282%29+
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.
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Approximate solutions:
x%5B1%5D+=+%287+%2B+sqrt%28+21+%29%29%2F%282%29+
x%5B1%5D+=+%287+%2B+4.583%29%2F%282%29+
x%5B1%5D+=+%2811.583%29%2F%282%29+
x%5B1%5D+=+5.791+
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x%5B2%5D+=+%287+-+sqrt%28+21+%29%29%2F%282%29+
x%5B2%5D+=+%287+-+4.583%29%2F%282%29+
x%5B2%5D+=+%282.417%29%2F%282%29+
x%5B2%5D+=+1.209
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+graph%28+300%2C+300%2C+-2%2C+7%2C+-10%2C+10%2C+x%5E2-7x%2B7%29+