SOLUTION: Find all real solutions 5Xsquared-4X-8

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Question 90580: Find all real solutions
5Xsquared-4X-8
Answer by checkley75(3666) About Me  (Show Source):
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USING THE QUADRATIC EQUATION x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ WE GET:
X=(4+-SQRT[-4^2-4*5*-8])/2*5
X=(4+-SQRT[16+160])/10
X=(4+-SQRT176)/10
X=(4+-13.27)/10
X=(4+13.27)/10
X=17.27/10
X=1.73 ANSWER.
X=(4-13.27)/10
X=-9.27/10
X=-.93 ANSWER.