Question

1) Calcule

a) √9 + √4 =
b) √25 - √16 =
c) √49 + √16 =
d) √100 - √36 =
e) √4 - √1 =
f) √25 - 3√8 =
g) 3√27 + 4√16 =
h) 3√125 - 3√8 =
i) √25 - √4 + √16 =
j) √49 + √25 - 3√64 =

Answer 1

Resposta:

a) $\sqrt{9}$ + $\sqrt{4}$ = 3+2 = 5

b) $\sqrt{25} - \sqrt{16} = 5 - 4 = 1$

c) $\sqrt{49} + \sqrt{16} = 7 + 4 = 11$

d) $\sqrt{100} - \sqrt{36} = 10 - 6 = 4$

e) $\sqrt{4} - \sqrt{1} = 2 - 1 = 1$

f) $\sqrt{25} - 3\sqrt{8} = 5-3\sqrt{8} = 5 - 6\sqrt{2}$

g) $3\sqrt{27} + 4\sqrt{16} = 9\sqrt{3} + 16$

h) $3\sqrt{125} - 3\sqrt{8} = 3(5\sqrt{5} - 2 \sqrt{2} )$

i) $\sqrt{25} - \sqrt{4} + \sqrt{16} = 7$

j) $\sqrt{49} + \sqrt{25} - 3\sqrt{64} = 7 + 5 - 3 x 8 = 7 + 5 - 24 = -12$

Espero ter ajudado ;)