Question

Y the fifth power times y to the fourth power

Answer 1

Y to the 9th power
explanation:
when multiplying the same variable, you add the exponents together :)

Answer 2

Answer:

$Y^9$

Step-by-step explanation:

When multiplying numbers/variables with exponents, according to the exponent rule, you have to add the exponents. 4 + 5 = 9.

$Y^{5}* Y^{4}=Y^{9}$