OAB is a triangle. O A = a OB = b
C is the midpoint of OA.
D is the point on AB such that AD: DB = 3:1
E is the point such that OB = 2BE
Using a vector method, prove that the points C, D and E lie on the same straight
line.
Input note: express CE in terms of CD
(5 marks)
​

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

your answer is b.

x = 33.9

y = 65.6

step-by-step explanation:

ιт ιѕ 6 6/23

step-by-step explanation:

нσρє ι ¢συℓ∂ нєℓρ уσυ συт

1. 293.2

2. 105.25   (105.3)