What is the simplified expression for the expression below?

7(x – 4) – 3(x + 5)
a.4x – 43
b.4x + 1
c.4x – 13
d.4x – 9

The answer is A

Step-by-step explanation:

Distribute:

=(7)(x)+(7)(−4)+(−3)(x)+(−3)(5)

=7x+−28+−3x+−15

Combine Like Terms:

=7x+−28+−3x+−15

=(7x+−3x)+(−28+−15)

=4x+−43

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: