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যদি A=[[a,b],[-1,2]],B=[[1,1],[2,4]] এবং...

যদি A=[[a,b],[-1,2]],B=[[1,1],[2,4]] এবং (A+B)(AB)=A^(2)-B ^(2), তারপর a+b এর মান সমান | ...

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