Answer:
40
Step-by-step explanation:
(6 + 2i)(6 - 2i)=40
|x| < 7
means x < 7 and x > -7
answer is -7 < x < 7
"Completing the square" is a step in the solution of quadratic equations. It can be accomplished without the guesswork or trial-and-error associated with methods like factoring, and it always leads to a solution. It is the method by which the quadratic formula is derived.
Answer:
19/41
Step-by-step explanation:
this fraction cannot be simplified since 19 is a prime number.
Use elimination.
-x = -6
X = 6
-4 (6) + 4y = 12
Y = 9
(X,y)
(6,9) is the solution
