Question

what is the square root of 21 with explaination​

Answer 1

this is the anwer. hope it helps

Answer 2

Step-by-step explanation:

√21=√3.7 has no square factors that can be moved outside the square root sign. so √21 cannot be simplified. it cannot be expressed as a rational number ( fraction) so the best we can do with normal notation is to either stick with √21 or give an approximation, such as √21=4.58