the 10th power of a is greater than or equal to 12

Answer 1

a^10 > 12

take the 10th root of both sides

a < -(12)^1/10 or a > (12)^1/10

or approximately

a < -1.2821 or a > 1.2821

a can be negative, since an even exponent will make it positive

If you restricted a to integers

a is less than or equal to negative 2

or a is greater than or equal to positive 2

the 10th root of 12 is about 1.2821, just use a calculator