-2u^9(-7u)

-2u^9(-7u)

= -2 * (-7u) * u^9

= 14u * u^9

= 14u^(1+9)

= 14u^10

To simplify the expression -2u^9(-7u), you can follow these steps:

Step 1: Apply the product of powers rule: When multiplying variables with the same base, you add the exponents.

-2u^9(-7u) = -2 * u^9 * (-7) * u

Step 2: Apply the multiplication rule: Multiply the coefficients together and combine the variables.

-2 * (-7) = 14, and u^9 * u = u^(9+1) = u^10

Therefore, -2u^9(-7u) simplifies to 14u^10.

To simplify the expression -2u^9(-7u), we can follow the rules of exponentiation and multiplication.

Step 1: Multiply the coefficients (-2) and (-7):
-2 * (-7) = 14

Step 2: Multiply the variables with the same base (u) by adding their exponents:
u^9 * u = u^10

Therefore, the simplified expression is 14u^10.