If `a, b, c in R and a^2 + b^2 + c^2 = 1,` then the possible values of `[ab + bc + ca]` are

If a + b + c = 29 and a^2 + b^2 + c^2 = 305 , find the value of ab + bc + ca .

If ab + bc + ca = 8 and a^2+b^2+c^2=20 , then a possible value of 1/2 (a + b + c) [(a-b)^2+(b-c)^2+(c-a)^2] is यदि ab + bc + ca = 8 है और a^2+b^2+c^2=20 , है, तो 1/2 (a + b + c) [(a-b)^2+(b-c)^2+(c-a)^2] का संभावित मान है :

IF a^2 + b^2 +c^2 =1 then the range of ab+bc +ca is

If a +b+c=6 , a^2 +b^2 +c^2 = 14 find the value of bc + ca +ab .

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 are distinct positive real numbers and a^(2)+b^(2) +c^(2)=1 then the value of ab+bc+ca is-