can someone please explain to me how to do this.
Mathematics
skyedanielle
Question
can someone please explain to me how to do this.
1 Answer

1. User Answers Anonym
y = x²  4x + 4
y = 2x  4
Find intersection of L and C:
x²  4x + 4 = 2x  4
x²  6x + 8 = 0
(x  2)(x  4) = 0
x = 2 or x = 4
When x = 2 , y = 2(2)  4 = 0
When x = 4, y = 2(4)  4 = 4
Points of intersection = A(2, 0) and B(4, 4)
Find the length of AB:
[tex] \text {Length of AB}= \sqrt{(40)^2 + (42)^2} = \sqrt{16 + 4} = \sqrt{20} = 4.47 \text{ units}[/tex]
Answer: 4.47 units