Question

there are two square roots of 121. one is 11. what is the other?

Answer 1

Respuesta:

That said, the root is the inverse operation of ^ 2. Like any positive number, the number 121 has two square roots: 121 −−− √21212, which is positive and called the principal square root, and −121 −−− √21212, which is negative. Together these two roots are denoted as ± 121 −−− √21212