Answer:

.
Step-by-step explanation:


Answer:
-8x+21
Step-by-step explanation:
Use the distributive property.
Answer:
-2x³ - 2y² + z⁴
Step-by-step explanation:
Step 1: Write out expression
x³ - 2y² - 3x³ + z⁴
Step 2: Combine like terms (x³)
-2x³ - 2y² + z⁴
Answer:
no
Step-by-step explanation:
linear functions have straight lines
so this is not a linear function