Question

B) x la puterea a 2 a =4/9
x la puterea a 2 a =18/25
x la puterea a 2 a =16/25
x la puterea a 2 a =8/9
x la puterea a 2 a=72/49
Dau coroana ​

Answer 1

${x}^{2} = \frac{4}{9} = > {x} = \sqrt{ \frac{4}{9} } = > x = \frac{ \sqrt{4} }{ \sqrt{9} } = > x = \frac{2}{3}$

Deci ca formula generală ai:

${x}^{2} = \frac{a}{b} = > x = \frac{\sqrt{a} }{ \sqrt{b} }$