square root of c^2
2 answers
square root of c^2 = c
√c^2 = c if c>=0
√c^2 = -c if c<0
the √ is always positive or 0
√16 = 4
√4^2 = 4
√(-4)^2 = 4
√c^2 = -c if c<0
the √ is always positive or 0
√16 = 4
√4^2 = 4
√(-4)^2 = 4