SOLUTION: x^2+8x+20=0

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Question 656149: x^2+8x+20=0
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%2B8x%2B20=0...use quadratic formula to solve for x

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ...note that a=1, b=8 and c=20

x+=+%28-8+%2B-+sqrt%28+8%5E2-4%2A1%2A20+%29%29%2F%282%2A1%29+

x+=+%28-8+%2B-+sqrt%28+64-80+%29%29%2F2+

x+=+%28-8+%2B-+sqrt%28+-16+%29%29%2F2+

x+=+%28-8+%2B-+sqrt%28+-1%2A16+%29%29%2F2+

x+=+%28-8+%2B-+4i%29%2F2+

x+=+-8%2F2+%2B-+4i%2F2+

x+=+-4+%2B-+2i+

solutions:
x+=+-4+%2B+2i+
or
x+=+-4+-+2i+

+graph%28+600%2C+600%2C+-10%2C+10%2C+-5%2C+25%2C+x%5E2%2B8x%2B20%29+