Question

3. If a? + b2 +c= 15 and ab + bc + ca = 5, then
find the value of (a + b + c)2.​

Answer 1

Answer:

25

Step-by-step explanation:

(a+b+c)2=A2+B2+c2+2(ab+BC+AC)

=15+2×5

=25.

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