Question

[Ichigo]

Bạn Duy giúp mik vs

Tính:

a) \(\sqrt{0,36}+\sqrt{0,49}\)

b) \(\sqrt{\frac{4}{9}}-\sqrt{\frac{25}{36}}\)

Answer 1

[Phạm Thị Trâm Anh]

a)\(\sqrt{0,36}\)+\(\sqrt{0,49}\)=0,6+0,7=1,3

b)\(\sqrt{\frac{4}{9}}\)-\(\sqrt{\frac{25}{36}}\)=2/3-5/6=4/6-5/6=-1/6

Answer 2

[Trần Việt Linh]

a) \(\sqrt{0,36}+\sqrt{0,49}=\sqrt{\left(0,6\right)^2}+\sqrt{\left(0,7\right)^2}=0,6+0,7=1,3\)

b) \(\sqrt{\frac{4}{9}}-\sqrt{\frac{25}{36}}=\sqrt{\left(\frac{2}{3}\right)^2}-\sqrt{\left(\frac{5}{6}\right)^2}=\frac{2}{3}-\frac{5}{6}=-\frac{1}{6}\)