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गुणनखंड

Question
CBSEHHIMAH8004111

निम्नलिखित व्यंजकों के गुणनखंड कीजिए:
p2 + 6p - 16

Solution

p2 + 6p - 16 = p2 + 6p + 9 - 25         [∵   -16 = 9 - 25]
                 = [(p)2 + 2(p)(3) + (3)2] - (5)2
                 = [p + 3]2  - [5) [∵ a2 + 2ab + b2 = (a + b)2]
                 = [p + 3] + 5][(p + 3) - 5]
                                               [∵ a2 - b2 = (a + b)(a - b)]
               = (p + 8) (p - 2)