Question

determine as somas algebricas ? √2+√2-7√2

Answer 1

$\sqrt{2} + \sqrt{2} - 7\sqrt{2} = \\ \sqrt{2}(1 + 1 - 7) = \\ \sqrt{2} \cdot - 5 = \\ \boxed{- 5\sqrt{2}}$

Answer 2

V2 + V2 - 7V2  = 2V2 - 7V2 = - 5V2