Question

if a+b+c = 9 and ab+bc+cd = 26 then find a2 + b2 + c2​

Answer 1

hey buddy here is your answer

GIVEN:

a + b + c = 9

ab + bc + ac = 26

TO FIND:

a^2 + b^2 + c^2

ANSWER:

As we know,

                 (a + b + c)^2 = a^2 + b^2 + c^2 + 2(ab + bc + ac)

Putting values,

                 (9)^2 = a^2 + b^2 + c^2 +  2(26)

                 81 =  a^2 + b^2 + c^2 +52

                 a^2 + b^2 + c^2 = 81 - 52

                 a^2 + b^2 + c^2 = 29

HOPE IT HELPS

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Answer 2

Answer:

so, your ans is 29

hope this helps u