Question

how to do a³- a² - a​

Answer 1

Answer:

a(a²-a-1)

a((a+1)(a-1)-a)

Answer 2

$\huge\star\pink{solve}$

$= a {}^{3} - a {}^{2} - a \\ \\ now \: \: take \: comman \: a \: in \: this \: eq \\ \\ = a(a {}^{2} - a - 1) \\ \\ or \: \: \: a(a(a - 1) - 1)$

or a[(a+1) (a-1) -a]

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$\huge\star\pink{formula_use}$

$\star\red{a^2-b^2=(a+b)(a-b)}$

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I hope it helps you