SOLUTION: what is the answer to the quadratic equation, with the final answer worked out to a number: x2-4x-7=0

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Question 517755: what is the answer to the quadratic equation, with the final answer worked out to a number: x2-4x-7=0
Answer by deborabr(181) About Me  (Show Source):
You can put this solution on YOUR website!
x2-4x-7=0
delta-> (-4)^2-4*1*(-7)
delta-> 16+28=44
x=[-(-4)+/- root 44]/2*1
=[4+/- root 44]/2
x'=[4+ root 44]/2
x"=[4- root 44]/2