Question

1. calcular o valor de cada expressão:

obs: Se puder coloque as contas.

Answer 1

a)
|5+8| = |13| = 13

b)
|2 - $\frac{19}{2}$| = $| \frac{4-19}{2} |$ = $| \frac{-15}{2} | = \frac{15}{2}$

c)
$| \sqrt{36} - \sqrt{25} | = |6-5|=|1|=1$

d)
$|1- \sqrt{9} | = |1-3|=|-2|=2$

e)
$| \sqrt{16}- \sqrt{81} | = | 4-9|=|-5|=5$

f)
$|2. \sqrt{9} - \sqrt{36} |=|2.3 - 6|=|6-6|=|0|=0$

g)
$| \sqrt{121} + \sqrt{(-7 )^{2} } |= |11+ \sqrt{49} |=|11+7|=|18|=18$

h)
$| \frac{ \sqrt{81} }{ \sqrt{9} } + \sqrt{ \sqrt{ -2^{8} } } |= | \frac{9}{3} + \sqrt{ \sqrt{256} } | = | \frac{9}{3} + \sqrt{16} |= | 3+4|=|7|=7$

i)
$| \sqrt{16+ \sqrt{81} } - \sqrt{ (-3)^{4} } |= | \sqrt{16+9} - \sqrt{81} |=| \sqrt{25} - \sqrt{81} |= |5-9| =$ |-4| = 4

j)
$| \sqrt \sqrt{ (-3)^{4} } } - \frac{ \sqrt{625} }{5} |= | \sqrt{ \sqrt{81} } - \frac{25}{5} | = | \sqrt{9} -5|=|3-5|=|-2|=2$

Ta ai resolvidinho