Gal6mera9stcr Gal6mera9stcr

10-06-2016
Mathematics

Answered

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

Verified Answer :

11-06-2016

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

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