Question from Jon, a student:

how do i solve for x and y if (2x+3y)²=0?

Hi Marie.

Let z = (2x+3y). Then (2x+3y)^{2} = z^{2} = 0, right? Then isn't it also true that z = 0?

Use this principle to simplify your problem and answer your question. Stephen La Rocque.