1. What is the solution of n^2-49=0?
a.-7
b.7
c.+7
d. no solution

2.What is the solution of x^2+64=0?
a.-5
b.8
c.+8
d.no solution

3.What is the side length of a square with an area of 144x^2?
a.12
b.12x
c.+12x
d.no solution

4.What is the value of z so that -9 and 9 are both solutions of x^2+z=103?
a.-22
b.3
c.22
d.184