Hey there,
First, find the square root of the given equation.
Keep in mind that this is solved for k = 0 and 1.
Second, simplify.

Best of Luck!
The greatest common factor (gcf) is 6.
The second option ! 2.54 - 2.3 = 0.24
The answer is 3x-x :)
You just simplify the expression, (4x^2-x^2) - (x- (-2x))