Question

Reduza os radicais e éfetue as o peraçoes indicada em cada caso..

A)raiz de 125 + raiz de 20 - raiz de 45
B) raiz de 72 - raiz de 18 + raiz de 50
C)raiz de 128 - raiz de 50 + raiz de 200
D)raiz de 8 + raiz 32 +raiz de 22 - raiz de 50

Answer 1

A) $\sqrt{125} + \sqrt{50} - \sqrt{45}$ =
$\sqrt{5.25} + \sqrt{5.4} - \sqrt{5.9}$ = 5$\sqrt{5} + 2 \sqrt{5} - 3 \sqrt{5} = 4 \sqrt{5}$

B) $\sqrt{72} - \sqrt{18} + \sqrt{50} = \sqrt{2.36} - \sqrt{2.9} + \sqrt{2.25} = 6 \sqrt{2} - 3 \sqrt{2} + 5 \sqrt{2} = 8 \sqrt{2}$

C) $\sqrt{128} - \sqrt{50} + \sqrt{200} = \sqrt{2.64} - \sqrt{2.25} + \sqrt{2.100} = 8 \sqrt{2} - 5 \sqrt{2} + 10 \sqrt{2} = 13 \sqrt{2}$

D) $\sqrt{8} + \sqrt{32} - \sqrt{50}$ = $\sqrt{2.4} + \sqrt{2.16} - \sqrt{2.25}$ = $2 \sqrt{2} + 4 \sqrt{2} - 5 \sqrt{2} = \sqrt{2}$