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Class-8»Maths

simplify (p q + q r )² - 2 p q² r

{(p q + q r)}^{2} - 2 p q^{2} r = p^{2} q^{2} + q^{2} r^{2} + 2 (p q) (q r) - 2 p q^{2} r = p^{2} q^{2} + q^{2} r^{2} + 2 p q^{2} r - 2 p q^{2} r = q^{2} (p^{2} + r^{2})

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