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What is the simplified form of (7x^2-2xy+5xy-3x^2)?

Answer and explanation

Correct answer: 4x^2+3xy

Combine like terms: 7x^2 and -3x^2 add to 4x^2, while -2xy and 5xy add to 3xy. Therefore, the simplified form is 4x^2+3xy. The option 10x^2+3xy is incorrect because the coefficients of x^2 must be added as 7+(-3), not 7+3. Exam tip: Add or subtract only terms having the same variables with the same powers.

Related tags

Algebraic ExpressionsPolynomialsLike TermsSimplificationGrade 9Introduction To PolynomialsMathematicsClass 9 Mcq

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