In this video playlist, you will learn everything you need to know about complex and imaginary numbers: (3 + 2i) + (5 - i) + 6i. Heavy snow warning as up to 30 inches to strike: 'Stay indoors' ...

Learn how to add or subtract radicals. A radical is a number or an expression under the root symbol. Radicals can only be added or subtracted if the numbers or expressions under the roots are the same ...

When Barack Obama told a crowd at a campaign event on Tuesday, “You can put lipstick on a pig, but it’s still a pig,” the McCain campaign swiftly took offense, claiming the analogy was directed at ...