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प्रश्न
Simplify: - 2x (x + y) + x2
बेरीज
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उत्तर
- 2x (x + y) + x2
= -2x × x + (-2x)y + x2
= – 2x2 – 2xy + x2
= – 2x2 + x2 – 2xy = – x2 – 2xy
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