Please do this question in copy and send me it's my humble request to u please help me it is very urgen
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59
Step-by-step explanation:
given = a+b+c = 11
ab + bc + ac = 31
to find = a^2 + b^2 +c^2
Answer = (a+b+c) = 11
(a+b+c)^2 = 11^2
a^2 + b^2 + c^2 +2[ab +bc +ac] =121
a^2 + b^2 + c^2 = 121 - 2 [ab+bc+ac]
a^2 + b^2 + c^2 = 121 - 2 (31)
a^2 + b^2 + c^2 = 59
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