Calculer les expressions numériques

Question

  • \(A=(-3)^2+2 \times (-5)^2+5 \times (-2)^2=\)

  • \(B=2^2 \times 2 \times 2^2 +3^2 \times 3^{-1} \times 3^4=\)

  • \(C=(-9)^{-1}+(\frac13)^2=\)