Math, asked by himayatigaming, 5 months ago

a²+b²+c²=20 and a+b+c=0 find ab+bc+ca

Answers

Answered by sapnabesar96

2

Answer:

ab+bc+ca= -10.

Step-by-step explanation:

a²+b²+c²=20 and a+b+c=0,

(a+b+c)² = a² + b² + c² + 2( ab + bc + ca) So, (0)² = 20 + 2(ab + bc + ca)

=-10

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