Question:সরল কর: 

গ. `(7p + 3r - 5x)^2 - 2(7p + 3r - 5x) (8p - 4r - 5x)`

            ` + (8p - 4r - 5x)^2` 

Answer মনে করি,  7p + 3r - 5x = a

     এবং   8p - 4r - 5x = b

:. প্রদত্ত রাশি

  `= a^2 - 2ab + b^2`

  `= (a - b)^2`

  `= {(7p + 3r - 5x) - (8p - 4r - 5x)}^2` 

                        [a ও b এর মান বসিয়ে]

  `= (7p + 3r - 5x - 8p + 4r + 5x)^2`

  `= (7r - p)^2`

  `= (7r)^2 - 2.7r.p + p^2`

  `= 49r^2 - 14pr + p^2`

  `= p^2 + 49r^2 - 14rp` (Ans) 

+ Report

Irin Moni

Editor, VCampus

Your Name

Your Email

Type of Report
Spelling MistakeIncorrect AnswerGrammar MistakeContent MissingImproper Text FormatInsufficient AnswerDuplicate QuestionImproper Sentence StructureImproper Equation/FormulaOther

Description