Step 1) Subtract #color(red)(3)# from each side of the equation to isolate the #x# term while keeping the equation balanced:
#4x^2 + 3 - color(red)(3) = 24 - color(red)(3)#
#4x^2 + 0 = 21#
#4x^2 = 21#
Step 2) Divide each side of the equation by #color(red)(4)# to isolate #x^2# while keeping the equation balanced:
#(4x^2)/color(red)(4) = 21/color(red)(4)#
#(color(red)(cancel(color(black)(4)))x^2)/cancel(color(red)(4)) = 5.25#
#x^2 = 5.25#
Step 3) Take the square root of each side of the equation to solve for #x# while keeping the equation balanced. When taking the square root the answer will be for both the negative and positive root:
#sqrt(x^2) = +-sqrt(5.25)#
#x = +-sqrt(5.25) = +-2.291# rounded to the nearest thousandth.
