Expand (a-b)^{3}.

Shirley Thompson 2021-12-12 Answered
Expand \(\displaystyle{\left({a}-{b}\right)}^{{{3}}}\).

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Expert Answer

reinosodairyshm
Answered 2021-12-13 Author has 3046 answers
It's easy.
\(\displaystyle{\left({a}-{b}\right)}^{{{3}}}={a}^{{{3}}}+{3}{a}^{{{2}}}{\left(-{b}\right)}+{3}{a}{\left(-{b}\right)}^{{{2}}}+{\left(-{b}\right)}^{{{3}}}={a}^{{{3}}}-{3}{a}^{{{2}}}{b}+{3}{a}{b}^{{{2}}}-{b}^{{{3}}}\)
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Virginia Palmer
Answered 2021-12-14 Author has 1304 answers
\(\displaystyle{\left({a}-{b}\right)}^{{{3}}}={a}^{{{3}}}-{3}{a}^{{{2}}}{b}+{3}{a}{b}^{{{2}}}-{b}^{{{3}}}\)
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