A
[tex]([ {15}^{2} \div 5 - {3}^{2} ) + 12] \div 6 = 8[/tex]
[tex]1) {15}^{2} = 225 \\ 2) {3}^{2} = 9 \\ 3)225 \div 5 = 45 \\4) 45 - 9 = 36 \\ 5)36 + 12 = 48 \\ 6)48 \div 6 = 8[/tex]
B
[tex] {3}^{2} \times 5 - {2}^{4} \div 2 = 37[/tex]
[tex]1) {3}^{2} = 9 \\ 2) {2}^{4} = 16 \\ 3)9 \times 5 = 45 \\ 4)16 \div 2 = 8 \\ 45 - 8 = 37[/tex]
C
[tex]3 \times ( {5}^{2} - {4}^{2} ) - 6 = 21[/tex]
[tex] 1){5}^{2} = 25 \\ 2) {4}^{2} = 16 \\ 3)25 - 16 = 9 \\ 4)9 \times 3 = 27 \\ 5)27 - 6 = 21[/tex]
Baftă!
