First slide
Theory of equations
Question

The product of the roots of the equation (x2)23|x2|+2=0 is

Moderate
Solution

 (x2)23|x2|+2=0|x2|23|x2|+2=0(|x2|2)(|x2|1)=0|x2|=1,2x2=±1,±2x=3,1,4,0

Hence, product of roots = 3 x 1x 4x0=0.

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