If `a^2+b^2+c^2 = 19 and ab+bc+ca = 3` Find the value of `a+b+c`

If a^(2)+b^(2)+c^(2)=16 and ab+bc+ca=10 find the value of a+b+c

If a^2+b^2+c^2 = 25 and a+b+c=7 , then find the value of ab+bc+ca .

If a + b + c = 6 and ab+bc+ca= 12. find the value of a^2+b^2+c^2

For real a, b and c if a^(2) + b^(2) + c^(2) = ab + bc + ca , then find the value of (a + b + c)^(2) A. 9a^(2) B. 81 a^(2) C. 27 a^(2) D. 24 a^(2)

If a+b+c=9 and ab+bc+ca=23, find the value of a^(2)+b^(2)+c^(2)

If a +b + c = 19, ab + bc + ca = 120 then what is the value of a^3 + b^3 + c^3 - 3abc?