How is multiplying rational numbers like multiplying integers

so rational multiplication is pretty much exactly like integer multiplication - you just do it twice, once for the top numbers and once for the bottom numbers of the two fractions.if you write rational as fractions, then to multiply two rational numbers, you use integer multiplication to multiply the numerators, giving the numerator of the result, and you use integer multiplication to multiply the denominators, giving the denominator of the result.

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:

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>