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गुणनखंड

Question
CBSEHHIMAH8004059

निम्नलिखित व्यंजकों के गुणनखंड कीजिए:
49 straight y squared space plus space 84 yz space plus space 36 straight z squared

Solution

हमें प्राप्त है,           
         49 straight y squared space plus space 84 yz space plus space 36 straight z space squared space equals space left parenthesis 7 straight y right parenthesis squared space plus space 2 left parenthesis 7 straight y right parenthesis left parenthesis 6 straight z right parenthesis space plus space left parenthesis 6 straight z right parenthesis squared
                                    [∵ (a+b)2 = a2+2ab+b2]
                                          = left parenthesis 74 space plus space 6 straight z right parenthesis squared                              
                                          = (7y + 6z)(7y + 6z)
∴       49 straight y squared plus 84 yx plus 36 space straight z squared space equals space left parenthesis 7 straight y space plus space 6 straight z right parenthesis squared space equals space left parenthesis 7 straight y space plus space 6 straight z right parenthesis space left parenthesis 7 straight y space plus space 6 straight z right parenthesis