Answer:
9 x⁵y⁵
Step-by-step explanation:
for a rectangle
area = length x width, (rearranging)
width = area / length
given area = 45x⁸y⁹ and length = 5x³y⁴
width = 45x⁸y⁹ / 5x³y⁴
= (45/5) ( x⁸y⁹ / x³y⁴)
= 9 ( x⁸y⁹ / x³y⁴)
= 9 ( x⁸⁻³y⁹⁻⁴ )
= 9 ( x⁵y⁵ )
= 9 x⁵y⁵
