Answer:
e(x) = d(x)+4
Step-by-step explanation:
d(x) = ( x +2)^2 -4
Add 4 to each side
d(x) +4 = ( x +2)^2 -4+4
d(x) +4 = ( x +2)^2
We know that (x=2)^2 = e(x)
d(x) +4 = e(x)
e(x) = d(x)+4
The first one : y = ( x-3/2 ) ^2 + 31/4
second one : y = (x+6)^2-25
vertex ; (-6,-25)
Answer:
matt sold 310.86
Step-by-step explanation:
first add bob's worth and cathy's worth, 189.21 +232.46=421.67. then subtract the answer by the total amount they all had, 732.53 - 421.67 = 310.86
D = sq.root of((x2 - x1)^2 + (y2 - y1)^2)
sq.root of 13 = sq.root of((x - (-2))^2 + (1 - 3)^2)
= sq.root of((x + 2)^2 + (-2)^2)
= sq.root of (x^2 + 4x + 4 + 4)
= sq.root of (x^2 + 4x + 8)
Now if we square both sides:
x^2 + 4x + 8 = 13
x^2 + 4x - 5 = 0
(x + 5)(x - 1) = 0
x = -5 or x = 1
