4 Answers

a^4x^5-2a^2b^2x^3y^4+b^2y^6 যত দূর সম্ভব 

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( a^2 x^3 - b^2 y^4 )^2 =(a^2 x^3)^2-2.a^2x^3.b^2 y^4+(b^2 y^4)^2 =a^4 x^6-2a^2b^2x^3y^4+b^4y^8

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(a^2x^3-b^2y^4)^2 =a^4x^6-2a^2x^3b^2y^4+b^4y^8

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(a2x3-b2y4)2

= (a2x3)2 - 2.a2x3.b2y4+(b2y4)2

= a4x- 2a2b2x3y4+ b4y8

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