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Class 8 maths calculators & solutions

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India · Standard 8View curriculum reference

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STANDARD 8 · FORMULA TO ANSWER

Algebraic identities

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Mathematics

Square of a sum

Watch a familiar algebraic identity become a number.

Inputs

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RESULT

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Formula & explanation

(a + b)² = a² + 2ab + b²

Variables & units

First value · a: Numeric value · minimum -1000000000, maximum 1000000000
Second value · b: Numeric value · minimum -1000000000, maximum 1000000000

Worked example

(10 + 3)² = 100 + 60 + 9 = 169.

Assumptions

Do not omit the middle term 2ab.

Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.

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NCERT/CBSE references. Topic selections are curated practice; board, edition and year requirements vary. These are suggested topic collections, including related practice and enrichment; they are not exhaustive syllabus mappings, university endorsements, or complete exercise solutions. All public calculators stay available to every learner.

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