Domain and Range Worksheet - Arizona State University

The expression under the radical is a quadratic: it needs to be set greater than or equal to zero. Factor it and plot the points -4 and 2 (this is where the expression = 0, which is okay). Then test a point from each of the three regions to see if the result is greater than zero. { t | t < -1 or t ( 0 }. Set the expression . ................
................