a-b=1, ab=6 then a3 -b3 =???
rkairconho:
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can anyone please help me with this question
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a^3 - b^3 = ( a -b )^3 + 3ab ( a - b )
( 1 )^3 + 3 × 6 ( 1 )
19
( 1 )^3 + 3 × 6 ( 1 )
19
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