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प्रश्न
Find which of the following equations are quadratic:
5x2 – 8x = –3(7 – 2x)
उत्तर
5x2 – 8x = –3(7 – 2x)
`\implies` 5x2 – 8x = 6x – 21
`\implies` 5x2 – 14x + 21 = 0; which is of the form ax2 + bx + c = 0.
∴ Given equation is a quadratic equation.
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