Please help me with quantifiers

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

What do u think u might go with a bestfriend that u don’t do with everyday friends( school friends)

Compare and contrast the merits and drawbacks of at least two of the scholarly approaches to literature described in this unit. be sure to mention at least one advantage that each approach has over the other. use one of the readings from this unit in your comparison. your answer should be at least 250 words.