When Cam Newton throws the football, the path of the football can be modeled using the formula, h(t) =
4.9t^2 +6t+ 8 where h(t) represents the height of the football from the
ground in meters and t represents the time the football is in the air in seconds. Approximately
how long will it take the football to hit the ground?

f(x) = y

f(-3) = -5

step-by-step explanation:

or

4.5%

step-by-step explanation:

hello from mrbilldoesmath!

answer:

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

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

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

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb