Question

4(mn^-2)

Answer 1

what do you need to do in this problem?

Answer 2

simplify the expression using the properties of exponents

Answer 3

when you have a variable raised to a negative exponent, that is equivalent to the same variable with a positive exponent but with the variable in the denominator.

So like x^-2 is the same thing as 1/(x^2)

Or if you had 1/(x^-2) you can move the x^-2 up to be in the numerator by changing its exponent to be positive 2... so 1/(x^-2) = x^2.

Answer 4

In your problem, you have 4(mn^-2)

The only term with a negative exponent looks to me like the "n" term... the way you have the parenthesis written, 4(mn^-2) = 4m(n^-2)

So the 4m stays in the numerator, but the n^-2 can be "moved" down to the denominator as n^2...

4m / (n^2)