Factorise: (2x+3) 3 - (2x-3) 3
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(2x+3) 3 - (2x-3) 3
= 3 [(2x+3) - (2x-3)] { taking 3 common outside}
= 3 [2x + 3 - 2x + 3]
= 3 [3 + 3]
= 3 x 6
= 18
= 3 [(2x+3) - (2x-3)] { taking 3 common outside}
= 3 [2x + 3 - 2x + 3]
= 3 [3 + 3]
= 3 x 6
= 18
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