Question

Find the zeroes of the quadratic polynomials and verify the relationship between the zeroes and the coefficients: 2x ² + x – 4​

Answer 1

Answer:

${2x}^{2} + x - 4 = 0\\ {2x}^{2} + 8x - x - 4 = 0 \\ 2x(x + 4) - 1(x + 4) \\ (2x - 1)(x + 4) = 0 \\ either.(2x - 1) = 0 \\ 2 x = 1 \\ x = \frac{1}{2} \: \: \: \: \: \\ or.(x + 4) = 0 \\ x = - 4$

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