Question

determine o valor das expressões
a) -✓64+✓3^2+4^2
b) -5.(✓16+✓196)​

Answer 1

$- \sqrt{64} + {3}^{2} + {4}^{2} = - 8 + 9 + 16 = \\ 17$

a)17

$- 5 \times ( \sqrt{16} + \sqrt{196} ) = \\ - 5 \times (4 + 14) = - 5 \times 18 = - 90$

b)-90