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Class 9 - Mathematics
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Class 9
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NCERT
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Exploring Algebraic Identities
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End of Chapter Exercises
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Q 11
QUESTION 11
Easy
If a+ b+ c = 5 and ab + bc + ca = 10, then prove that \(a^3 + b^3 + c^3 − 3abc = − 25\).
SOLUTION