For quadratics, these formulas are used mainly for factoring.
Your equation can be written as ...
... 2(x² +2x -3) = 0
You factor this by looking for factors of -3 (c=x1·x2) that add to give +2 (b=-(x1+x2)). These are {-1, +3}, so the factorization is ...
... 2(x -1)(x +3) = 0
The roots are then 1 and -3, which sum to -b = -2.
(You will note that the numbers used in the binomial factors are the opposites of the roots x1 and x2 in the Viete's Formulas. That is how we can look for them to sum to "b", rather than "-b".)
Answer:
18/28
Step-by-step explanation:
0.4219 Approximately .
Also HIIII
Answer:
the first choice
Step-by-step explanation:
5 1/9 = 5.44444.....
That is the easiest way for me to do it
Answer:
Option A
Step-by-step explanation:
Angular velocity of an object is defined by,
Angular velocity (w) =
Here, Δθ = Change in angle of rotation
Δt = Duration or time
In this question Δθ =
radians and Δt = 24 seconds
Therefore, angular velocity = 
=
radians per second
Option A is the answer.