Question
Download Solution PDFনিম্নলিখিতটি সরল করুন।
(2x +3)2 − (x + 1)2.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFপ্রদত্ত:
(2x + 3)2 - (x + 1)2
ব্যবহৃত সূত্র:
(a + b)2 = a2 + 2ab + b2
(a - b)2 = a2 - 2ab + b2
গণনা:
(2x + 3)2 - (x + 1)2
⇒ [(2x)2 + 2 × 2x × 3 + 32] - [(x)2 + 2 × x × 1 + 12]
⇒ [4x2 + 12x + 9] - [x2 + 2x + 1]
⇒ 4x2 + 12x + 9 - x2 - 2x - 1
⇒ (4x2 - x2) + (12x - 2x) + (9 - 1)
⇒ 3x2 + 10x + 8
∴ সঠিক উত্তর হল বিকল্প (4).
Last updated on Jul 22, 2025
-> RRB NTPC Undergraduate Exam 2025 will be conducted from 7th August 2025 to 8th September 2025.
-> The RRB NTPC UG Admit Card 2025 will be released on 3rd August 2025 at its official website.
-> The RRB NTPC City Intimation Slip 2025 will be available for candidates from 29th July 2025.
-> Check the Latest RRB NTPC Syllabus 2025 for Undergraduate and Graduate Posts.
-> The RRB NTPC 2025 Notification was released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts while a total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC).
-> Prepare for the exam using RRB NTPC Previous Year Papers.
-> HTET Admit Card 2025 has been released on its official site