Question

Find the value of a+b+c if a2+b2+c2=35 and ab+bc+ca=23

Answer 1

Here is your answer

$(a + b + c) {}^{2} = a {}^{2} + b {}^{2} + c {}^{2} + 2(ab + bc + ca) \\ (a + b + c) {}^{2} = 35 + 2(23) \\ (a + b + c) = \sqrt{35 + 46} = \sqrt{81} \\ a + b + c = 9 \: \: answer$
Hope it helps you

Answer 2

Step-by-step explanation:

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