Answer:
(x-2)²
Explanation:
Hello!
We can factor this by grouping.
Find two numbers that add up to -4, but multiply to 4.
The two possible numbers are -2 and -2.
Expand -4x to -2x and -2x, and factor by grouping the first two and last two terms.
Factor by Grouping
- x² - 4x + 4
- x² - 2x - 2x + 4
- (x² - 2x)+(-2x + 4)
- x(x - 2)-2(x - 2)
- (x - 2)(x - 2)
- (x-2)²
The factored form is (x-2)².