Question

(5.y)^2-20=0

tìm y

3 like

Answer 1

(5.y)^2-20=0

=> (5.x)^2 = 0 + 20 

=> (5.x)^2 = 20

=> sai đề

Answer 2

\(\left(5y\right)^2-20=0\)

\(\Rightarrow5y=\sqrt{20}\)

\(\Leftrightarrow y=\frac{\sqrt{20}}{5}=\frac{2\sqrt{5}}{5}\)

Answer 3

(5y)^2-20=0

<=>(5y)^2=20

<=>5 y= căn 20

<=>y= căn 20/5

Answer 4

\(y=\frac{2}{\sqrt{5}}\)

Answer 5

y=-2/căn bậc hai(5), y=2/căn bậc hai(5)

Answer 6

(5.y)^2-20=0

(5.y)^2=20.................................!

chac sai de roi ban a!

Answer 7

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