Question

if a+b+c=6and,ab+bc+ca=3 then find the value of a^2+b^2+c^2​

Answer 1

Answer:

30

Step-by-step explanation:

${( a+ b + c)}^{2} = {a}^{2} + {b}^{2} + {c}^{2} + 2(ab + bc + ca)$

=>a²+b²+c²=(a+b+c)²-2(ab+bc+ca)

=6²-2×3

=30