Answer: two
Step-by-step explanation:
Factor out the equation:
-2([tex]x^{2}[/tex] + 4) = 0
-2 cannot equal zero, so that means [tex]x^{2}[/tex] - 4 will have to equal to zero in order to get zero as a product
[tex]x^{2}[/tex] - 4 = 0
Factor the equation to get:
(x+2)(x-2) = 0
x = 2, x = -2
The equation has two roots
