Answer:
[tex] {x}^{4} = 2880[/tex]
Step-by-step explanation:
[tex] {y}^{2} = 20 \: (eq . \: 1)[/tex]
[tex] {x}^{2} = {(2 \sqrt{3y)} }^{2} = 12y [/tex]
Putting value of eq. 1 in the following:
[tex] {x}^{4 } = {(12y)}^{2} = 144{y}^{2} = 144 \times 20 = 2880[/tex]
