Question

slove. 2x2-4x-8.


$plese \: give \: me \: aswer \: fast$
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Answer 1

Answer:

the value of x is -1 ± √5.

Step-by-step explanation:

Now the equation is:

            2x² + 4x - 8 = 0

            x² + 2x - 4 = 0

Now we know the formula:

            x = - b ± √(b² - 4ac) / 2a

Applying this, we get:

x = -2 ± √(2² - 4(1)(-4)) / 2(1)

x = -2 ± √(4 + 16) / 2

x = -2 ± √20 / 2

x = -2 ± 2√5 / 2

x = -1 ± √5