Given f(x)=4x2+19x−5 and g(x)=4x2−x .

What is (fg)(x) ?

xx+5 where x≠0, 5
−19x+5x where x≠0, 14
x+5x where x≠0, 14
−x19x−5 where x≠0, 519

THE RIGHT ANSWER IS THE
x+5x where x≠0, 14
I TOOK THE TEST

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

after simplifying it i got: -36.25 as my answer. hope that !

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft