If in the expansion of $(1+x)^p(1-x)^q$, the coefficients of x and $x^2$ are 1 and -2 , respectively, then $\mathrm{p}^2+\mathrm{q}^2$ is equal to :

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If in the expansion of \((1+x)^p(1-x)^q\), the coefficients of x and \(x^2\) are 1 and -2 , respectively, then \(\mathrm…