1. Simplify the following:
(a) (2x + p -c)- (2x - p + c)2
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Answer:
-2x + 3p - 3c ................
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→ ( 2x + p - c ) - ( 2x - p + c )2
→ ( 2x + p - c ) - ( 4x - 2p + 2c )
→ 2x + p - c - 4x + 2p - 2c
→ -2x + 3p - 3c
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