Quadratic equations and complex numbers asap

we are given

we can also write it as

now, we can use factor formula

we can use above formula

we get  

now, we can simplify it

now, we can set it to 0

and then we can solve for x

now, we can use quadratic formula

now, we can plug values

and we get

So, we will get solution as

...............Answer

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

read more on -

step-by-step explanation: