kadence

11-08-2013, 03:34 AM

Which of the following is equal to (x^4)^5+(y^4) (y^5) ?

(A) x^{20} \cdot y^9

(B) x^9+y^{20}

(C) x^{20}+y^{20}

(D) x^9+y^9

(E) x^{20}+y^9

Thanks!;);)

(A) x^{20} \cdot y^9

(B) x^9+y^{20}

(C) x^{20}+y^{20}

(D) x^9+y^9

(E) x^{20}+y^9

Thanks!;);)