Question

find the zeros of the quadratic polynomial 5x²-4-8x

Answer 1

$5 {x}^{2} - 4 - 8x \\ 5 {x}^{2} - 8x - 4 \\ 5 {x}^{2} - 10x + 2x - 4 \\ 5x(x - 2) + 2(x - 2) \\ (5x + 2)(x - 2) \\ x = - \frac{2}{5} \: and \: 2$
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Answer 2

Answer:

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