Answer:
51x² + 8x
Step-by-step explanation:
Step 1: Write expression
6x² + 10x - 1 + 45x² - 2x + 1
Step 2: Combine like terms (x²)
51x² + 10x - 1 - 2x + 1
Step 3: Combine like terms 9x)
51x² + 8x - 1 + 1
Step 4: Combine like terms (constants)
51x² + 8x
