(x-2)^2+20=0
(x-2)^2=-20
If you root both sides you will yield complex numbers (i, imaginary unit is such that i^2=-1),
x-2=20i
x=2+20i
and whenever x is a solution a complex conjugate x* is also a solution,
x*=2-20i
So the answer is A.
Hope this helps :)
Answer: 1/9
Step-by-step explanation:
Let's call x the probability of landing in A
So, probability of landing on B is 5x and probability of landing on C is 3x.
As we only have this options, the probabilities A + B + C = 1. So,
x + 5x + 3x = 1
9x = 1
x = 1/9
Answer:
f(g(x))=(x-2)^2 - 7
(x-2)(x-2) - 7
x^2-2x-2x+4-7
x^2-4x-3
g(f(x))=x^2-2-7
x^2-9
(x+3)(x-3)
Step-by-step explanation:
- to solve for f(x), replace x with the g(x).
- since we don't multiply a bracket with the negative or the positive signs to the
- exponent, you have to factor into two binomials.
- use the FOIL method to eliminate the brackets.
- add like-terms
- to find g(x), replace x with the f(x).
- add like-terms
- since there's difference of square, factor them into two binomials
Answer:
D
Step-by-step explanation:
The answers are It is a quadrilateral and Both pairs of opposite sides are parallel.
Hope this helps.
