Mathematics for IGCSE & O level - Algebraic Manipulation (Section 2 - No. 5)
For the expression x² - 8x + 16, what is the value of the constant term when the expression is written in the completed square form (x - a)² + b?
0
16
-4
4
설명
x² - 8x + 16 can be factored as (x - 4)² which is the same as (x - 4)² + 0, meaning the constant term b is 0