Question

(i) a, b, c, d ক্রমিক সমানুপাতী হলে দেখাও যে,
$( 1 \div a )+ (1 \div b) +( 1 \div c) + (1 \div d) {?}^{2} = (a + b + c + d) {?}^{2}$

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Answer 1

Step-by-step explanation:

Hi mate ur answer is a²+b²+c²

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