If a+1/a=3 then find the value of a³+1/a³

9

Step-by-step explanation:

1.Solve the equation

a + 1/a = 3

a + 1 = 3a

2a = 1

a = 1/2

2. Replace 1/2 for a

1/2^3+1/1/2^3

1/8 + 1/1/8

1 1/8 divided by 1/8 = 9

step-by-step explanation:

i hate black

for the friend request.

when a figure, such as triangle (xyz) is reflected over the line y = x to create x'y'z' the x-coordinates and y-coordinates of the original image (pre-image) will be reversed for the image. (e.g., (x, y) > (y, x)) this means that the pre-image position of the x- and y-coordinates switch places which in turn provides a mirror like image of the original xyz.  

i notice that when i draw a line segment from x to x', that the points are parallel from each other -- they are exactly across from each other and do not intersect with any other points.  

yes, think i would see the same characteristic if you drew the line segment connecting y with the reflecting line and then y' with the reflecting line because of the essence of reflections. because it is a mirror image, each point was effected the same way which leads me to conclude that they same would apply to y and y'.