Class 10 Book Solution from Amitava Mitra in Ratio and Proportion Question No: 2(21)(i)
a, b, c, d ক্রমিক সমানুপাতী হলে, দেখাও যে,
\((a^2-b^2)(c^2-d^2)=(b^2-c^2)^2\)
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Class 10 (দশম শ্রেণী) Amitava Mitra (অমিতাভ মিত্র - দশম শ্রেণী) Other Chapter Solutions
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