a)
[tex] {(7 - 2)}^{2} - {3}^{2} = {5}^{2} - {3}^{2} = 25 - 9 = 16[/tex]
b)
[tex]9 - {4}^{2} \div {2}^{3} = 9 - 16 \div 8 = 9 - 2 = 7[/tex]
c)
[tex]5 + 3 \times {2}^{2} = 5 + 3 \times 4 = 5 + 12 = 17[/tex]
[tex]1] \ (7-2)^2-3^2=5^2-3^2=25-9=16\\\\2] \ 9-4^2:2^3=9-16:8=9-2=7\\\\3] \ 5+3\cdot2^2=5+3\cdot4=5+12=17[/tex]
