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1 3

Given the quadratic equation a x 2 + b x + c = 0 , one of the two roots is given by x = - b + b 2 - 4 a c 2 a

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49

You should be able to see this inline equation: x 2 + x y 2 + x y z 2 = 0

The area of a circle is : π r 2

x 2 + x 3 + x 4 + x 5

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MathML specification