Question

determine as seguintes somas algebricas

Answer 1

a) $\sqrt{2}+5\sqrt{2}=6 \sqrt{2}$

b) $\sqrt{3}+\sqrt{3}=2 \sqrt{3}$

c) $2 \sqrt{x}+5\sqrt{x} -3\sqrt{x} -8\sqrt{x} +6\sqrt{x}=2+5-3-8+6\sqrt{x}=2\sqrt{x}$

d) $2\sqrt{b}+5\sqrt{b} -15\sqrt{b} =2+5-15\sqrt{b} =-8\sqrt{b}$