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$a^{3} - 21 a - 20$ রাশিটির একটি উৎপাদক হবে নিচের কোনটি ?

Created: 6 years ago | Updated: 12 hours ago

(a+2)

(a-2)

(a+1)

(a-1)

গণপূর্ত অধিদপ্তরের উপ-সহকারী প্রকৌশলী (সিভিল)-২৬.০৮.২০১১ গণিত উৎপাদকে বিশ্লেষণ (Factorization)

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প্রদত্ত রাশি : $a^{3} - 21 a - 20 a^{3} - a^{2} - a^{2} - a - 20 a - 20 a^{2} (a + 1) - a (a + 1) - 20 (a + 1) (a + 1) (a^{2} - a - 20) (a + 1) (a^{2} - 5 a + 4 a - 20) (a + 1) {a (a - 5) + 4 (a - 5)} (a + 1) (a + 4) (a - 5)$
সুতরাং সঠিক উত্তর অপশন (গ)।

6 years ago

Md Azizur Rahman

Founder of Satt

উৎপাদকে বিশ্লেষণ (Factorization)

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