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प्रश्न
Multiply: 2x2 – 4x + 5 by x2 + 3x – 7
बेरीज
उत्तर
2x2 – 4x + 5 by x2 + 3x – 7
(2x2 – 4x + 5) × (x2 + 3x – 7)
2x2(x2 + 3x − 7) − 4x(x2 + 3x − 7) + 5(x2 + 3x − 7)
2x4 + 6x3 − 14x2 − 4x3 − 12x2 + 28x + 5x2 + 15x − 35
2x4 + 6x3 − 4x3 − 14x2 − 12x2 + 5x2 + 28x + 15x − 35
2x4 + 2x3 − 21x2 + 43x − 35
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Multiplying a Polynomial by a Polynomial
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