Question

One of the zeroes of the polynomial 2

2 + 9 − 5 is
$2 {x^{2} + 9x - 5$
​

Answer 1

Answer:

${2x}^{2} + 9x - 5 \\ {2x}^{2} + 10x - x - 5 \\ 2x(x + 5) - 1(x + 5) \\ (x + 5)(2x - 1) \\ so \: zeroes \: are \: - 5 \: and \: \frac{1}{2}$