Evaluate the expression \dfrac{7^2}{x^2-2} x
2
−2
7
2


start fraction, 7, squared, divided by, x, squared, minus, 2, end fraction for x=3x=3x, equals, 3.

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?