Positive indices

a) 12x^-3 y^-4

To write this expression with positive indices, we need to move the negative exponent to the denominator and make it positive.

So, 12x^-3 y^-4 can be rewritten as:

12 / (x^3 * y^4)

To simplify the positive indices of the expression 12x^-3y^-4, we can start by moving the negative exponents to the denominator:

12x^-3y^-4 = 12 / (x^3 * y^4)

Now, we can rewrite the expression using positive exponents:

12 / (x^3 * y^4)