Question

If a=3.b= -6and c=6

$a ^{2} + b {}^{2} + c {}^{2} - ab \: - bc \ -ca$

Answer 1

${\pink{\huge{\underline{\mathfrak{HOLA!!!}}}}}$

a=3
b=-6
c=6

a²+b²+c²-ab-bc-ca
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