A rectangle is 14 cm long and 10 cm wide . If the length is reduced by x cm and its width is increased also by x cms so as to make it a square, then its area changes by :

BUET GTCL Technician PSC PMG Northern Region – Postal Operator - 2023 GTCL Technician - 2023 গণিত আয়তক্ষেত্রের ক্ষেত্রফল

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