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Question
विस्तार करां.
(3x + 4y − 5p)2
Sum
Solution
आपणास माहित आहे कि,
(a + b + c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ca
(3x + 4y − 5p)2
= (3x)2 + (4y)2 + (−5p)2 + 2(3x) (4y) + 2(4y) (−5p) + 2(−5p) (3x)
= 9x2 + 16y2 + 25p2 + 24xy − 40yp − 30px
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