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Subjects
Class 10MathematicsPolynomialsOperations on real numbers and the laws of exponentsHardLevel 43
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What is the simplified form of ((m+n)^2+(m-n)^2)?

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Answer and explanation

Correct answer: (,2m^2+2n^2,)

When both expansions are added, (2mn) and (-2mn) cancel, giving (2m^2+2n^2). In exams, notice opposite middle terms.

Related tags

PolynomialsAlgebraic-IdentitiesExpansionReal-Numbers

Frequently asked questions

What is the correct answer to this question?

(,2m^2+2n^2,)

Why is this the correct answer?

When both expansions are added, (2mn) and (-2mn) cancel, giving (2m^2+2n^2). In exams, notice opposite middle terms.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Operations on real numbers and the laws of exponents.

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