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Calculeaza:
a) 5×(2×5+1)-4×5+ 1;
b) 5 + 5×(9 +3×4);
c) (7×2 + 4)-15-11×14;
d) 7×[5×3-(4×3-5)] + 3×4;
e) (2 + 2×3)^2:2^4;
f) (5^2+10×5^2) : 11.