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Solve the quadratic equation by completing the square. x2 + 6x + 7 = 0

Solve the quadratic equation by completing the square. x2 + 6x + 7 = 0
asked 169k views
4 votes
Solve the quadratic equation by completing the square. x2 + 6x + 7 = 0

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User ArunJose
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8.8k points

1 Answer

2 votes
Hello,

x²+2*3x+3²+7-9=0
==>(x+3)²-2=0
==>(x+3-√2)(x+3+√2)=0
==> x=-3+√2 or x=-3-√2
answered
User Lucas Zamboulis
by
8.7k points
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