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Which expression represents twice the difference of (x) and (y)?

Answer and explanation

Correct answer: \(2(x-y)\)

First, the difference of \(x\) and \(y\) is \(x-y\). Twice this entire difference is \(2(x-y)\), which equals \(2x-2y\). In \(2x-y\), only \(x\) is doubled, so it is not correct. Exam tip: For “twice the difference,” put the difference in brackets and multiply the whole bracket by 2.

Related tags

Algebraic ExpressionsVerbal ExpressionsPolynomialsDistributive PropertyBracketsIntroduction To PolynomialsMathematicsClass 9 Mcq

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