Question

I need to know how to do number 20

Answer 1

`(x^4y^3)^2=(x^4)^2(y^3)^2=x^(4\cdot2)y^(3\cdot2)=x^8y^6\\\\Used:\\\\(a\cdot b)^n=a^n\cdot b^n\\\\(a^n)^m=a^(n\cdot m)`