A popular video game retailer develops apps. The total profit, in dollars per day, after x days can be modeled by the function R(x) = 2x3 – 20x2 + 26x + 48. The total cost, in dollars per day, after x days, can be modeled by the function A(x) = x2 – 2x – 3. After how many days does the retailer start making money? 8
16
32
64

49%

step-by-step explanation:

when you realize that you dont know just realize i just took a test and im so smart

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

idkidkdidkdkdidkx

step-by-step explanation:

nndncnd cnn

snddnd

hello from mrbilldoesmath!

answer:   (7x + 6y) ( 49x^2 - 42xy + 36y^2)

discussion:

in general, the factorization of a^3 + b^3 is

a^3 + b^ 3 = (a + b) ( a^2 - ab + b^2)

in our case note that 343 = 7^3 and 216 = 6^3 so the equation becomes:

343x^3 + 216y^3 = (7x)^3 + (6y)^3

if you think of a (above) as 7x and b as 6y the factorization becomes

343x^3 + 216y^3 =

((7x + 6y) (   (7x)^2 - 7x*6y + (6y)^2)   =

(7x + 6y) ( 49x^2 - 42xy + 36y^2)

you,

mrb

(a + b) (a^2 - a b + b^2)