2 Calcule o valor de cada expressão. a) sqrt (9)+sqrt (16) f) sqrt [3](27)-sqrt (9) b) -sqrt (25)+sqrt (49) g) sqrt (169)-sqrt (225) C) -sqrt [3](8)+sqrt (144) h) sqrt [3](125)-sqrt [3](8)+sqrt (81) d) sqrt (100)-sqrt [3](64) i) sqrt (0,04)-sqrt (0,09)+sqrt (0,16) e) -sqrt (121)+sqrt (196) j) sqrt ((1)/(4))-sqrt ((1)/(9))+sqrt ((1)/(16))

a) $$\sqrt{9} + \sqrt{16} = 3 + 4 = 7$$

b) $$-\sqrt{25} + \sqrt{49} = -5 + 7 = 2$$

c) $$-\sqrt[3]{8} + \sqrt{144} = -2 + 12 = 10$$

d) $$\sqrt{100} - \sqrt[3]{64} = 10 - 4 = 6$$

$$-\sqrt{121} + \sqrt{196} = -11 + 14 = 3$$

f) $$\sqrt[3]{27} - \sqrt{9} = 3 - 3 = 0$$

g) $$\sqrt{169} - \sqrt{225} = 13 - 15 = -2$$

h) $$\sqrt[3]{125} - \sqrt[3]{8} + \sqrt{81} = 5 - 2 + 9 = 12$$

i) $$\sqrt{0,04} - \sqrt{0,09} + \sqrt{0,16} = 0,2 - 0,3 + 0,4 = 0,3$$

j) $$\sqrt{\frac{1}{4}} - \sqrt{\frac{1}{9}} + \sqrt{\frac{1}{16}} = \frac{1}{2} - \frac{1}{3} + \frac{1}{4} = \frac{5}{12}$$