a) [tex](7-3)^{3} = 4^{3} = 64[/tex]
b) (2+3)² = 2² + 2 * 2 * 3 + 3² = 4 + 12 + 9 = 25
c) 12² - 5² = 144 - 25 = 119
d) 40² + 30² = 1600 - 900 = 700
e) 50² - 30 ² = 2500 - 900 = 1600
f) [tex]2^{4} + 3^{2} * 2 * 5^{0} = 16 + 9 * 2 * 1 = 16 + 18 = 34[/tex]
g) 5² - 3² + 4² = 25 - 9 + 16 = 16 + 16 = 32
h) 15² - 2² * 3² = 225 - 4 * 9 = 225 - 36 = 189
i) 5² + 2 * 5 * 3 + 3² = 25 + 30 + 9 = 64
