Question

o valor da expressao -√16 + √25 - (8-9) sob 4 -2 sob 2 e?

Answer 1

$- \sqrt{16} + \sqrt{25} - \frac{(8-9)}{4} - \frac{2}{2} \\ \\ -4 + 5 -( -\frac{1}{4} ) - 1 \\ \\ 1 + \frac{1}{4} - 1 \\ \\ \boxed{ \frac{1}{4}}$