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Factor analysis

Algebra Level 2

Factorize $(a^2+7a)^2- 8(a^2+7a)-180$ .

(a-2 )(a+6) (a+11) (a+101)

(a-19)(a-20)(a+25)(a+55)

(a-2) (a+2) (a+5) (a+9)

(a-3) (a+1) (a+8) (a+9)

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by Munem Shahriar

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