November 2019 1 50 Report
(Radiciação)
O valor da expressão (na foto)
 \frac{ \sqrt{a} \times \sqrt{a + \sqrt{a} } \times \sqrt{a - \sqrt{a} } \times \sqrt{a + 1} }{ \sqrt{a {}^{2} + 1 } }

é:
a)
 \sqrt{a + 1}
b) a
c) a-1
d) a+1
e)
a - 1
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