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4. Expand (5p-3p)cube |
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Answer» the question is wrong there is ( 5p - 3q ) CUBE ANS (5p-3q) identity = ( a-b )cube = A3 - Y3 - 3xy ( x-y ) = a3 - 3x2y + 3xy2 - y2 ( 5p - 3q ) ( 5p )3 - (3q)3 - 3 × 5p × 3q (5p - 3q ) 125p3 - 27 q3 - 45pq (5p) - 45pq (-3q) 125p3 - 27q3 - 225p2q + 135p2q |
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