![Solve \ x^4 - 17x^2 + 16 = 0](https://tex.z-dn.net/?f=Solve%20%5C%20x%5E4%20-%2017x%5E2%20%2B%2016%20%3D%200)
To solve this equation , we need to write it in quadratic form
![ax^2+bx+c=0](https://tex.z-dn.net/?f=ax%5E2%2Bbx%2Bc%3D0)
To get the equation in quadratic form we replace x^2 with u
![x^2 = u](https://tex.z-dn.net/?f=x%5E2%20%3D%20u)
can be written as
, Replace u for x^2
So equation becomes
![u^2 - 17u + 16 = 0](https://tex.z-dn.net/?f=u%5E2%20-%2017u%20%2B%2016%20%3D%200)
Now we factor the left hand side
-16 and -1 are the two factors whose product is +16 and sum is -17
(u-16) (u-1) = 0
u -16 = 0 so u=16
u-1 =0 so u=1
WE assume u = x^2, Now we replace u with x^2
Now take square root on both sides , x= +4 and x=-4
Now take square root on both sides , x= +1 and x=-1
So zeros of the function are -4, -1, 1, 4
Remark
I think we are to assume that the line is a straight one and that it contains a total of 180o at the intersection.
Equation
2x + 7 + 6x - 9 = 180o
Solve
Combine the like terms on the left.
2x + 6x + 7 - 9 = 180
8x - 2 = 180o Add 2 to both sides.
8x - 2 + 2 = 180 + 2
8x = 182 Divide by 10
8x/8 = 182/8
x = 22.75
But that is not the answer.
You need to find 6x - 9
Angle = 6x - 9
Angle = 6*18.2 - 9
Angle = 127.5 <<<<< Answer.
Answer:
maximum value is 17.
Step-by-step explanation:
8.5=1/2(x-0)
8.5=1/2x
8.5=x/2
8.5×2=x
17=x
x=17
Answer:
9 + 8 + 12 = 29
Step-by-step explanation:
The answer would be $8029.91