Answer:
x²⁰
Explanation:
x⁴ * x⁵
= x^(4*5)
= x²⁰
x^9
If we have x^2 * x^3 we have (x * x) * (x * x * x) = x * x * x * x * x = x^5 which demonstrates that x^a * x^b = x^(a+b), 4 + 5 = 9
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