What aspect of a story can give a literary critic clues about a story's complex theme

In the excerpt of puck’s speech shown here, how many couplets do you see? if we shadows have offended, think but this, and all is mended, that you have but slumber'd here while these visions did appear. and this weak and idle theme, no more yielding but a dream,

Find the center and the radius of the circle with the equation: x^-2x+y^2+4y+1=0

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. the length of each side of a square increases by 2.5 inches to form a new square with a perimeter of 70 inches. the length of each side of the original square was inches.