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Polynomials
Important Questions
Important Questions
- Find zeroes of polynomial x2 - 3 and verify relationship between zeroes and coefficients.
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x2 - 3 = (x - √3)(x + √3)\nZeroes: √3, -√3\nSum = 0 = -(-3)/1 ✓\nProduct = -3/1 ✓ - Divide 2x2 + 3x + 1 by x + 2 and verify division algorithm.
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Quotient = 2x - 1, Remainder = 3\nVerification: (x+2)(2x-1) + 3 = 2x2 + 3x + 1 ✓ - If alpha and beta are zeroes of x2 - 5x + 6, find 1alpha + 1beta.
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alpha + beta = 5, alpha x beta = 6\n1alpha + 1beta = alpha + betaalpha beta = 56