Question

If x + 2 is a factor of x square + ax -2 then a =

Answer 1

Hope it will helps u...

Step-by-step explanation:

Answer 2

Answer:

α = 1

Step-by-step explanation:

ax² + bx + c = a(x - $x_{1}$)(x - $x_{2}$) and

$x_{1}$ + $x_{2}$ = - $\frac{b}{a}$

$x_{1}$ × $x_{2}$ = $\frac{c}{a}$

~~~~~~~~~

x² + αx - 2

If (x + 2) is factor of given quadratic function, then one of the zero is (- 2)

(- 2) × $x_{2}$ = - 2 ===> $x_{2}$ = 1

- 2 + 1 = - α / 1

α = 1

Thus, given trinomial is

x² + x - 2 = (x - 1)(x + 2)