The standard form of a quadratic equation is: ax^2 + bx + c = 0
a = 1 ; b = -2 ; c = -8
To find the zeros, you put in x=0 which gives (0,-8) and use the quadratic formula to find the other zeros; f(x) = 0
Quadratic formula:
x = (-b+/-√(b^2-4ac))/2a
The x-value for the vertex is -b/2a
x = 1
put this in for x and solve for the f(x)
1 - 2 - 8 = -9
vertex: (1, -9)
The vertex form of a quadratic equation: f(x) = a(x-h)^2 + k
where (h, k) is the vertex.
If you don't know the vertex, you would need to factor it into this form. Look at the center term bx, what you could be added to the equation to make a perfect square.
f(x) = (x^2 - 2x + 1) - 9
By splitting the -8 into 1 - 9 we've created a perfect square (x-1)^2
f(x) = (x-1)^2 - 9
Answer:
It will be 11 for each side of the square
Step-by-step explanation:
Hope this Helped
Answer:
-11
Step-by-step explanation:
-10-4+3
Let's break it down, -10-4 = -14
then, -14 + 3 = -11
Hope this helps :D
136 + 25x ≤ 650
<span>136 - 136 + 25x ≤ 650 - 136 </span>
<span>25x ≤ 514 </span>
<span>(1/25)(25x) ≤ (514)(1/25) </span>
<span>x ≤ 20.56 </span>
<span>there can be at at the most, 20 chair in each row.</span>
