Question

a square + b square + c square is equal to what

Answer 1

formula is (a-b+c)²=
a²+b²+c²-2ab-2bc+2ca
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for ur question answer will be
a²+b²+c²=
(a-b+c)²+2ab+2bc-2ca
I think this is OK for u
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thank u

Answer 2

Answer:

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

Step-by-step explanation:

Given : Expression $a^2+b^2+c^2$

To find : Expression is equal to ?

Solution :

We know the identity,

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

Extracting the value of  $a^2+b^2+c^2$

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

Therefore, The value of the expression is

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