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x² -4x+4>0 => (x-2)(x-2)>0. We can illustrate this line on a graph showing a quadratic whose vertex is at (2,0). Therefore, the answer to our inequality is x<2,x>2 (but x does no...

The Electoral College is not the best method because campaigns focus on swing states, demonstrated by the fact that in the 2012 Presidential Election, 38 states were not visited a single time. This may ca...

This question tests fundamental understanding of integration and checks that the student is not simply memorizing the simple examples for the test. Most students will remember that the integral of 1/x is ...

Isostatic sea level change refers to a change in the level of the land relative to the sea, and it is a localised change. The two main causes are isostatic rebound - the slow rise of areas that were once ...

When there body enters an state of aerobic exercise, the body is working in a zone of heart rate usually above 120bpm, however this is subjective to each individual. Due to the contractions of the muscles...