Question

A=3+b then find the value of a³-b³-9ab

Answer 1

hi, if a=3+b ,then
${(3 + b)}^{3} - ( {b}^{3} ) - 9ab$
$27 + {b}^{3} - {b}^{3} - 9ab$
$27 - 9ab$
I think this is the answer
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