milegres
9

a) (-4)² - 3 => 16 - 3 = 13 b) 7 - $\sqrt{25}$ => 7 - 5 = 2 c) $\sqrt{0} + \sqrt{1}$ => 0 + 1 = 1 d) $\sqrt{81} + \sqrt{144}$ => 9 + 12 = 21 e) 2 × $\sqrt{49} -3$ $\sqrt{4}$ => (2 × 7) - (3 × 2) => 14 - 6  = 8