Question

If two zeros of the polynomial 2 x cube + 3 x square - 5 x - 6 are -1 and -2 find the third zero.

Answer 1

here is ur answer

Answer:

4.5

Step-by-step explanation:

$let \: 2 {x}^{3} + 3 {x}^{2} - 5x - 6 = 0$

$\alpha = - 1 \\ \beta = - 2$

$\alpha + \beta + \gamma = \frac{ - b}{a}$

$- 1 - 2 + \gamma = \frac{ - ( - 3)}{2}$

$\gamma = \frac{9}{2} = 4.5$

hope the answer helps

Answer 2

Answer:4.5

Put 4.5 instead of x

And solve