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weeeeeb [17]
3 years ago
5

-27=2x^2-4 PLEASE HELP ASAP

Mathematics
2 answers:
Nesterboy [21]3 years ago
6 0
X = [ (i sqrt46) / (2) ] ; - [ (i sqrt46) / (2) ]
Harlamova29_29 [7]3 years ago
4 0

Answer:

<h3>                NO REAL SOLUTIONS </h3>

and complex solutions:  \bold{x_1=\frac{ i\,\sqrt{46}}2\ ,\quad x_2=-\frac{ i\,\sqrt{46}}2}

Step-by-step explanation:

-27 = 2x² - 4

-2x² = 27 - 4

-2x² = 23

 x² = -23/2

means NO REAL SOLUTIONS  

(as there is no real number that put instead of x gives value less then 0)

However in complex numbers we have:

x=\pm\sqrt{-\frac{23}2}=\pm\sqrt{\frac{23}2}\cdot i=\pm\, i\sqrt{\frac{46}4}=\pm\frac{ i\,\sqrt{46}}2\\\\ x_1=\frac{ i\,\sqrt{46}}2\ ,\quad x_2=-\frac{ i\,\sqrt{46}}2

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