3 years ago

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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How many roots does -2x^2-8=0 have​

How many roots does -2x^2-8=0 have