Question 345956
~3:(X)-5=3  the ~ symbolizes the square root

Since -5 does not contain the variable to solve for, move it to the right-hand side of the equation by adding 5 to both sides.
~3:(X)=5+3

Add 3 to 5 to get 8.
~3:(X)=8

To remove the radical on the left-hand side of the equation, cube both sides of the equation.
(~3:(X))^(3)=(8)^(3)

Simplify the left-hand side of the equation.
X=(8)^(3)

Expand the exponent (3) to the expression.
X=(8^(3))

Cubing a number is the same as multiplying the number by itself 3 times (8*8*8).  In this case, 8 cubed is 512.
X=(512)

Remove the parentheses around the expression 512.
X=512