The expression x²-14x+31=63 is a quadratic
equation. To solve it, you must order it:
x²-14x+31-63=0
x²-14x-32=0
Then, you must apply the quadratic formula, which is shown
below:
x=(-b±√(b^2-4ac))/2a
So you have the values of a,b and c:
:
a=1
b=-14
c=-32
When you substitute those values
in the quadratic formula, you obtain:
x=(-(-14)±√((-14)^2-4(1)(-32))/2(1)
x1=-2
x2=16
So, the correct option is the third one: x=-2 or x=16
Answer:
0, 5/4
Step-by-step explanation:
If 
, you get 0=0, which is obviously true.
As long as K is not 0, you can divide by k and get 
which is solved by 
Answer:
No solutions
Step-by-step explanation:
Substitute:
This system has no solutions.
Hope this helps!
Answer:
A) $2.42, $2.33, $2.58
B) The cheapest deal is 24 for $56
Step-by-step explanation:
