Answer:
Option (4)
Step-by-step explanation:
Step - 1 : 5(x² - 8x + 3)
Step - 2 : 5(x²- 8x + 16 - 16 + 3)
Step 3 : 5[(x - 4)²- 16 + 3]
Step 4 : 5[(x - 4)² - 13]
Step 6 : 5(x - 4)² - 65
Therefore, Cedric made a mistake in step 3, he incorrectly wrote the square as (x + 4)². He should have written as (x - 4)².
Option (4) will be the correct option.
