Math CentralQuandaries & Queries


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 = z2 = 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.

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