Question

Simplify by combining like terms. Write each answer with the variables in alphabetical order and any constant term last. -a³+9a-3a²+4

a. -a³-3a²+9a+4
b. -a³+3a²-9a+4
c. a³-3a²+9a-4
d. a³+3a²-9a-4

Answer 1

To simplify the expression -a³+9a-3a²+4, combine the like terms and write the answer in alphabetical order.

Step-by-step explanation:

To simplify the expression -a³+9a-3a²+4 by combining like terms, we need to collect the terms that have the same variable raised to the same power. In this case, we have the following terms:

• -a³
• 9a
• -3a²
• 4

The terms -a³ and -3a² both have the variable 'a' raised to a power, so we can combine them. Similarly, the terms 9a and 4 are constant terms. Combining these like terms, we get:

-a³-3a²+9a+4