32. The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is
increased by 5 cm, the area of the rectangle is
increased by 75 sq. cm. Find the length of the
rectangle.
A) 20
B) 40
C 80
D) None of these

d

Step-by-step explanation:

thats true and i think nw

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: