Solve u² = 49, where u is a real number.
Simplify your answer as much as possible.

Step-by-step explanation:

To undo the square on the u, you have to take the square root of both sides:

The square root of u-squared is just u, so that's easy.  When you take the square root of 49, however, you have to remember that what you get is both the positive and the negative of the square root of 49 which is 7.  This is because 7 squared is 49 and so is (-7) squared.  So the answer is

u = ±7

step-by-step explanation:

this woman was an important writer and propagandist during the american revolution. she was a member of the committee of correspondence (in fact the committee was formed in her home) and was an advisor to many of the revolutionary leaders, including george washington and john adams. who was this revolutionary woman?

nada

step-by-step explanation: