-2 exponent

Question

How do I solve an expression with a -2 exponent?

Ex: (3y^-6x^2/4y^-7)^-2

Answer 1

it should be (4/3)²*(1/y)²*(1/x⁴⁾

Answer 2

(3y^-6x²/4y^-7)^-2

 

(3y^-6 * x²)^-2

 

(4y^-7)^-2

 

[(3/4) y^(-6-(-7)) *x²]^-2

 

[3/4 *y*x²]^-2

 

(4/3)² *(1/y²)*(1/x⁴)