Answer:
are we supposed to solve this???
18x^5y^4+27y^8−8x^7−12x^2y^4
Step-by-step explanation:
(2x^5+3y^4)(−4x^2+9y^4)
=(2x^5+3y^4)(−4x^2+9y^4)
=(2x^5)(−4x^2)+(2x^5)(9y^4)+(3y^4)(−4x^2)+(3y^4)(9y^4)
=−8x^7+18x^5y^4−12x^2y^4+27y^8
=18x^5y^4+27y^8−8x^7−12x^2y^4
