Hi:) Is there a reason why when we square root a value , there is a negative and positive answer?

( eg : √9 = ±3 )

why can’t it just be 3?

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

What is the cube root of -1,000p^12q3? -10p^4 -10p^4q 10p^4 10p^4q