Question

O valor de -√900 é igual a:



a) 30

b) 450

c) –30

d) –450

Answer 1

$\large\boxed{\begin{array}{lr} - \sqrt{900} ~ = ~ - \sqrt{30 {}^{2} } = ~ \boxed{ - 30} \end{array}}$

Answer 2

✑ A alternativa correta é c) -30

$\large\boxed{\begin{array}{l} \displaystyle \sf -\sqrt{900}\\\\ \displaystyle \sf calculando\;a\:raiz\:quadrada\:\\\displaystyle \sf de-900\:obtemos\:-30\\\\\displaystyle \sf-30 \sf\end{array}}$