If a^2+b^2+c^2=2aanda+b+c=0 find ab+bc+acSimilar questions solutions
z , 6 Years ago
Grade 9
Algebra> If a^2+b^2+c^2=2a and a+b+c=0 find ab+bc+...
1 Answers
Arun
Last Activity: 6 Years ago
Dear studnt
(a + b + c)^2 = a^2 + b^2 + c^2 + 2 (ab + bc + ca)
0 = a^2 + 2 (ab + bc + ca)
Hence
ab + bc + ca = – a^2 / 2
Regards
Arun
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