Math, asked by sk8r, 4 days ago

find ab+bc+ca if a²+b²+c²=23 and a+b+c=16

Answers

Answered by chemistrywala

0

Step-by-step explanation:

(a+b+c)² = a²+b²+c²+2(ab+bc+ca)

16² = 23 + 2(ab+bc+ca)

ab+bc+ca = 256-23/2 = 233/2

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