find formula for
a^2+b^2+c^2=
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HEY!!!...
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HERE YOUR ANSWER
(a+b+c)^2 = a^2+ b^2 + c^2 + 2ab + 2bc + 2ca
so,
a^2+b^2+c^2 = (a+b+c)^2 -2ab - 2bc - 2ca
it is the formula
.
.
☺️☺️☺️☺️
HERE YOUR ANSWER
(a+b+c)^2 = a^2+ b^2 + c^2 + 2ab + 2bc + 2ca
so,
a^2+b^2+c^2 = (a+b+c)^2 -2ab - 2bc - 2ca
it is the formula
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