If a + b + c = 0 than a² + b² + c² = ?
manasiriya2003:
Answer is -3abc
Answers
Answered by
1
Answer:
Step-by-step explanation:
-2(ab+bc+ca)
Can you explain step by step
Answered by
0
Answer:
Step-by-step explanation:
a + b + c = 0 , squaring both sides.
(a + b + c )^2 = 0^2
a^2 + b^2 +c^2 + 2 (ab + bc + ca ) = 0
16 +2 ( ab + bc + ca ) = 0
2 (ab +bc + ca ) = 16
ab + bc + ca = -6÷2
ab + bc + ca = - 8
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