Question

What is the square root of 90

Answer 1

`√(90) = √(9 * 10) = √(9) * √(10) = 3 * √(10) =3 √(10)`

Using this formula:

`√(a * b) = √(a) * √(b)`

Hope that helps :)

Answer 2

`√(90)=√(9*10)\\--------------------\\use\ √(a* b)=√(a)*√(b)\\--------------------\\=√(9)*√(10)=3*√(10)=\huge\boxed{3√(10)}`