यदि m = -9 और n = 13 है, तो 25m 2 + 40mn + 16n 2 का मान ज्ञात कीजिए। | Mathematics MCQ [Updated November 2026] | GkGet

Mathematics · Algebra

यदि m = -9 और n = 13 है, तो 25m² + 40mn + 16n² का मान ज्ञात कीजिए।

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