Question

Qual é o valor de x, sendo

Answer 1

Resposta:

 $x = \frac{1}{2} - 0,8 + \frac{3}{4}-\sqrt\frac{1}{4} \\\\x = \frac{1}{2} - 0,8 + \frac{3}{4}-\frac{\sqrt{1} }{\sqrt{4} }\\\\x = \frac{1}{2} - 0,8 + \frac{3}{4}-\frac{{1} }{{2} }\\\\x = \frac{1}{2} - \frac{1}{2} - 0,8 + \frac{3}{4} }\\\\x = -0,8 + \frac{3}{4}\\x = -0,8 + 0,75\\x = -0,05$

Bons estudos!