How to draw the pieces of square

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?

What is the measure of angle 1? a.28 b.152 c.168 d.64

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)?