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प्रश्न
Subtract:
2a2 from − 7a2
संक्षेप में उत्तर
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उत्तर
\[- 7 a^2 - \left( 2 a^2 \right)\]
\[ = - 7 a^2 - 2 a^2 \]
\[ = - 9 a^2\]
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