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Expansion Formulae — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsExpansion Formulae1 Mark
Question
(5m + 3n) (5m – 3n) = ___ – ___ = ___ – ___
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Answer

(5m + 3n) (5m – 3n) = (5m)² – (3n)² = 25m² – 9n²

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