Question

Ex 10 (e,f,g,h)
Va rog mult sa ma ajutati

Answer 1

e) $\sqrt{\frac{1}{81}\cdot\frac{16}{25}}=\sqrt{\frac{1}{9^2}\cdot\frac{4^2}{5^2}}=\frac{1}{9}\cdot\frac{4}{5}=\frac{4}{45}$

f) $\sqrt{17^2\cdot3^2}=17\cdot3=51$

g) $\sqrt{\frac{1}{17}}\cdot\sqrt{\frac{17}{49}}=\sqrt{\frac{1}{17}\cdot\frac{17}{49}}=\sqrt{\frac{1}{7^2}}=\frac{1}{7}$

h) $\sqrt3\cdot\sqrt48=\sqrt{3\cdot48}=\sqrt{3\cdot3\cdot2^4}=3\cdot2^2=12$