Evalute (4x + y)2 by suitable identity:
(a) 4x2 + y2 + 8x
(b) 4x + y + 8xy
(c) 16x2 + y2 + 8xy
(d) 16x2 + y2 + 8
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Answer:
C) 16x² + y² + 8xy — (a+b)² = a² + b ² + 2ab
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