Question

The discrimination of the quadratic equation 2x2-5x-4=0 is

Answer 1

$2 \times 2 - 5x - 4 = 0 \\ 4 - 5x - 4 = 0 \\ 0 - 5x = 0 \\ - 5x = 0 \\ x = 0 \div 5 \\ x = 0$

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