Question

which expression is equivalent to 4x^-2 +3x^-5

7x^-7

12x^10

7/x^7

4x^3 +3 over x^5

4x^5 +3 over x^7

Answer 1

you did not add
4x^-2 +3x^-5 = x^-5 (4x^3 + 3) = (4x^3+3)/x^5

Answer 2

7x^-7

Answer 3

I apologize for the mistake in my previous response. The correct expression that is equivalent to 4x^-2 + 3x^-5 is:

(4x^3 + 3) / x^5