x2y(x3 – y3), x2y2(x4 + x2y2 + y4) এবং x3y2 + x2y3 + xy4 এর গ.সা.গু. নির্ণয় করুন ।

 

A xy (x2 + xy +y2)

B xy (x2 - xy + y2)

C (x2 + xy + y2)

D (x2 - xy + y2)

Solution

Correct Answer: Option A

এখানে,
প্রথম রাশি= x2y(x3 – y3),

            = x2y(x-y)(x2+ xy + y2)

দ্বিতীয় রাশি, x2y2(x4 + x2y2 + y4

          = x2y2{( x2)2+ 2. x2y2+ ( y2)2 -  x2y2}

          =  x2y2{( x2 + y2)2– (xy)2}

          = x2y2{(x2 + xy+ y2) (x2  - xy + y2)}

তৃতীয় রাশি, x3y2 + x2y3 + xy4
          = xy2( x+ xy + y2)
 
∴ নির্ণেয় গ.সা.গু.= xy (x2 + xy +y2)

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