Factor this expression completely. x^2 - r^2

x² - r² = (x-r)(x+r)

Step-by-step explanation:

x² - r² = (x-r)(x+r) = x²+xr - xr - r² = x² - r²

or

x² - r²= x² + xr - xr -r²= x(x+r) - r(x+r) = (x+r)(x-r)

3, 12, 48, 384, 1536, 6144, 24576, 98304

step-by-step explanation:

just keep timing it by 4.

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation: