Math, asked by satyajitsanyal0, 5 hours ago

please solve and explain it​

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Answered by Hunny479
1

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Here your amswer mark me brainliest

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Answered by Anonymous
0

=> a²+ b ² + c ² = 77

=> a+b+c=15 (a+b+c)2 = 152

=> a²+ b²+c²+2 (ab + bc+ca): 225

=> 77 +2 (ab+bc+ca) = 225

=> 2 (ab + bc+ca) = 148

=> ab + bc +ca = 74

Hope it helps :)

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