Factorise 81(x+1)+90(x+1)
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81x + 81 +90x+ 90
171x+ 171
171(x+1)
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Answer:
81(x+1)+90(x+1)
(81x+81)+(90x+90)
81x+90x+81+90
171x+171
ANSWER:171X+171
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