SOLUTION: {{{ x^2+7x-5= 0 }}}

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Question 512298: +x%5E2%2B7x-5=+0+

Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
+x%5E2%2B7x-5=+0+
Put a 1 coefficient on the x² term:

1x%5E2%2B7x-5=+0+

Compare to

ax%5E2%2Bbx%2Bc=+0+

and get a=1, b=7, c=-5 and substitute in:

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

x+=+%28-7+%2B-+sqrt%28+7%5E2-4%2A1%2A%28-5%29+%29%29%2F%282%2A1%29+

x+=+%28-7+%2B-+sqrt%28+49%2B20+%29%29%2F2+

x+=+%28-7+%2B-+sqrt%2869+%29%29%2F2+

Edwin