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Which expression represents the difference between five times the square of (y) and three times (x)?

Answer and explanation

Correct answer: \(5y^2-3x\)

The square of \(y\) is \(y^2\), so five times its square is \(5y^2\). Three times \(x\) is \(3x\). Taking the difference in the stated order gives \(5y^2-3x\), so option A is correct. Option C reverses the order and therefore changes the sign of the difference. Exam tip: “the difference between A and B” is usually written as \(A-B\).

Related tags

Algebraic ExpressionsPolynomialsVerbal ExpressionsSubtractionExponentsIntroduction To PolynomialsMathematicsClass 9 Mcq

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