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w²=-(w+1). putting this value in given expression
or [3+5w+3*(-w-1)]^6
=(3+5w-3w-3)^6
=(2w)^6
=64. w^6. ( since w^6=(w³)²=1)
=64= RHS
or [3+5w+3*(-w-1)]^6
=(3+5w-3w-3)^6
=(2w)^6
=64. w^6. ( since w^6=(w³)²=1)
=64= RHS
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