Question

Calcule:
a) 7 - √25
b) (expoente 5 na raiz)√0 + 1
c) ³√0+ +³√-125
d) ⁴√81 + (expoente 5)√-125
e) 4 + ³√-1
f)5- 3√-8
g) 7³√-1 -5
h) 2√49 - 3√1​

Answer 1

Explicação passo-a-passo:

$a)~~7-\sqrt{25} =7-5=2\\ \\ b)~~\sqrt[5]{0} +1=0+1=1\\\\ c) \sqrt[3]{0} +\sqrt[3]{-125} =0+\sqrt[3]{(-5)^3} =0-5=-5\\ \\d)~~\sqrt[4]{81} +\sqrt[3]{-125} =\sqrt[4]{3^4} +\sqrt[3]{(-5)^3} =3-5=-2\\ \\ e)~~4+\sqrt[3]{-1} =4-1=3\\ \\ f)~~5-\sqrt[3]{-8} =5-\sqrt[3]{(-2)^3} =5-(-2)=5+2=7\\ \\ g)~~7\sqrt[3]{-1} -5=7(-1)-5=-7-5=-12\\ \\ h)~~2\sqrt{49} -3\sqrt{1} =2(7)-3(1)=14-3=11$