7x^3 + 3x^2 - 10x + 6 ÷ (x+5)
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x2 + 10x – 3 = 0. Since x2 + ... (2x – 1) (x – 3) = (x + 5) (x – 1) is a quadratic equation. ... 7x – 3 = 0. Since 7x – 3 is a linear polynomial. ∴ x2 + 3x + 1 = (x – 2)2 is not a quadratic equation.
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