Find the roots and the vertex of the quadratic on a calculator. Round all values to 3 decimal places (if necessary).
y = x2 + 3x – 98
Roots:
and
Vertex:

answer: no

step-by-step explanation:

you are only given the cost not the amount of pounds.

17.08

correct me if i am wrong.

let's call the solutions x₁ = (5 - 2√7)/3 and x₂ = (5 + 2√7)/3

then the equation is (x-x₁)(x-x₂) = 0

if you fill that in you get a lot of numbers which you can recognize as ax²+bx+c=0.

step-by-step explanation:

you can see that a=1 (there is just an x²)

b = (-5 -2√7 + 2√7 - 5)/3 = -10/3

c = -2√7)/3 ) * (-5+2√7)/3) = -1/3

so your answer is 3x^2 – 10x – 1 = 0