Answer:
2x⁴ + 2x + 10
Step-by-step explanation:
Step 1: Write out expression
-7x - 5x⁴ + 5 + 7x⁴ + 5 + 9x
Step 2: Combine like terms (x⁴)
2x⁴ - 7x + 5 + 5 + 9x
Step 3: Combine like terms (x)
2x⁴ + 2x + 5 + 5
Step 4: Combine like terms (constants)
2x⁴ + 2x + 10
