SOLUTION: Solve each equations. Give answers involving radicals in simplest radicals form. x^2+2x-4=0

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Question 718650: Solve each equations. Give answers involving radicals in simplest radicals form.
x^2+2x-4=0
Answer by jsmallt9(3758) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%2B2x-4=0
This will not factor. So we must use the Quadratic Formula:
x+=+%28-%282%29+%2B-+sqrt%28%282%29%5E2-4%281%29%28-4%29%29%29%2F2%281%29
Simplifying...
x+=+%28-%282%29+%2B-+sqrt%284-4%281%29%28-4%29%29%29%2F2%281%29
x+=+%28-%282%29+%2B-+sqrt%284%2B16%29%29%2F2%281%29
x+=+%28-%282%29+%2B-+sqrt%2820%29%29%2F2%281%29
x+=+%28-2+%2B-+sqrt%2820%29%29%2F2
x+=+%28-2+%2B-+sqrt%284%2A5%29%29%2F2
x+=+%28-2+%2B-+sqrt%284%29%2Asqrt%285%29%29%2F2
x+=+%28-2+%2B-+2%2Asqrt%285%29%29%2F2
x+=+%282%28-1+%2B-+sqrt%285%29%29%29%2F2
x+=+%28cross%282%29%28-1+%2B-+sqrt%285%29%29%29%2Fcross%282%29
x+=+-1+%2B-+sqrt%285%29
which is short for:
x+=+-1+%2B+sqrt%285%29 or x+=+-1+-+sqrt%285%29