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Scorpion4ik [409]
3 years ago
5

How many roots does -2x^2-8=0 have​

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0

Answer: two

Step-by-step explanation:

Factor out the equation:

-2(x^{2} + 4) = 0

-2 cannot equal zero, so that means x^{2}  - 4 will have to equal to zero in order to get zero as a product

x^{2} - 4 = 0

Factor the equation to get:

(x+2)(x-2) = 0

x = 2, x = -2

The equation has two roots

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