Let f(x) = x^2 + 6 and g(x)= x+8/x . find ( g o f)(­ -7)

a.295/49

b.-57/7

c.63/55

step-by-step explanation: you take each of the numbers and divide by the amount then you take the range

the aswere is the one with all 8's and the second one is with the 10,8 and 6

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

the answer will be -6x^2 +46

step-by-step explanation: