7(15\3-2) because GEMDAS OR PEMDAS
(1)
we are given

we can use quadratic formula


now, we can compare and find a , b and c
we get

now, we can plug these values into quadratic formula


we can simplify it



so, we will get solution
{−3+i, −3−i}.........Answer
(2)
we are given equation as

Since, Jamal solve this equation by completing square
so, firstly we will move constant term on right side
so, subtract both sides by 14


we can write

so, we will add both sides by 4^2

we get
..............Answer
Three million, three hundred eighty eight thousand, one hundred ninety eight
Answer:
x - 2
Step-by-step explanation:
"difference" means subtraction (-)
"a number" means an unknown variable -- x
x - 2
Answer:
C)
Step-by-step explanation:
Given:
Number of freshmen = 3
Number of sophomores =3
Number of juniors =3
Number of seniors = 3
The team's captain is randomly selected from any grade level.
To find the the probability that a freshman will not be selected as captain.
Solution:
Total number of members in the team =
= 12
Probability that a freshman will be selected as captain will be:
⇒ 
⇒ 
Reducing to simple fraction by dividing numerator and denominator by 3.
⇒ 
⇒ 
Thus, probability that a freshman will not be selected as captain will be given as:
⇒ 
Taking LCD.
⇒ 
Subtracting the numerators.
⇒
(Answer)