SOLUTION: x^2+8x+5=0 simplify your answer. type an exact answer using radicals as needed. use integers or fractions for any numbers in the expression. use a comma to seperate answers as n

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Question 547135: x^2+8x+5=0
simplify your answer. type an exact answer using radicals as needed. use integers or fractions for any numbers in the expression. use a comma to seperate answers as needed.
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
 

 x² + 8x + 5 = 0

1x² + 8x + 5 = 0    Compare to

ax² + bx + c = 0  and get a=1, b=8, c=5 and substitute into:

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%28-8+%2B-+sqrt%28+8%5E2-4%2A1%2A5+%29%29%2F%282%2A1%29+

x+=+%28-8+%2B-+sqrt%2864-20+%29%29%2F2+

x+=+%28-8+%2B-+sqrt%2844%29%29%2F2+

x+=+%28-8+%2B-+sqrt%284%2A11%29%29%2F2+

x+=+%28-8+%2B-+2sqrt%2811%29%29%2F2+

x+=+-8%2F2+%2B-+2sqrt%2811%29%2F2+

x+=+-4+%2B-+sqrt%2811%29+

Solutions are -4+-+sqrt%2811%29+ and -4+%2B+sqrt%2811%29+

Edwin