We can write this as:-
P(x) = + x^3 - 5x^2 - 25x + 125
There are 2 changes of real sign so by Descartes Rule of signs there are either 2 positive real roots or 0 positive roots.
P(-x) = - x^3 - 5x^2 + 25x + 125
There is just one change of sign so there is exactly 1 real negative root.
125 is a multiple of 5 so By rational root theorem 5 could be a positive root.
P(5) = 125 - 125 - 125 + 125 = 0 so one zero is 5
if we divide the polynomial by (x - 5) we get the quadratic
x^2 - 25
(x + 5)(x - 5) = 0
x = 5,-5
so the roots are 5 (multiplicity 2) and -5.
2 real positive zeroes and one real negative zero
To start with, draw a line say AB.
At point B, construct 60 degrees.
Bisect the angle to get 30 degrees.
Bisect the 30 degrees to get 15 degrees.
The angle opposite the 15 degrees is 165 degrees
Answer:
Write the following sentences and give the function of each underlined word.
a. Yellow describes snake and crawled tells of an action.
b. Shoaib is the name of a person and large describes the company.
c. Tap is the name of a thing; yesterday tells when it was leaking (helps describe the action).
d. Me stands in place of a noun (the person speaking) and morning is the name given to the early
part of the day.
e. And joins two parts of the sentence; are fed tells of an action (continuing).
f. Saw tells of a past action; in shows the relationship between peacock and forest.
g. Oh! Shows a feeling or emotion; new describes the car.
Answer: 3 1/18
11/3 * 5/6 =
55/18
= 3 1/18
