What is the square root of 4

Square root of a number is 2 numbers that multiply to get 4 that are the same

first find the factors

4=2 times 2

then find the doubles and write only one from each pair

√4=2

so if you had a number like 36 then

36=2 times 2 times 3 times 3

the doubles are 2 and 3 so

√36=2 times 3=6

square root of 4 can be 2 or - 2