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Lisa [10]
3 years ago
12

How to solve 2x^2 - 4x = 3

Mathematics
1 answer:
zhenek [66]3 years ago
6 0

Answer:

1 ± i(1/2)√2

Step-by-step explanation:

Write this quadratic in standard form:  subtract 3 from both sides.  This results in 2x^2 - 4x - 3 = 0.  Let's apply the quadratic formula.  The coefficients of the x terms are 2, -4 and -3, so the discriminant is (-4)^2 - 4(2)(-3), or 16 - 24 = -8.

Following the format of the quadratic formula, we get

     -(-4) ±i2√8       4 ±i2√2        

x = ----------------- = --------------- =  1 ± i(1/2)√2

               4                    4

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vova2212 [387]
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Answer choice B is incorrect.

C) f(x) = 4(2)^{-x}
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Answer choice C is incorrect.

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Answer choice D is incorrect.


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Step-by-step explanation:

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