English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

If the equation 2x^2+4x=-3 is being solved, is -1+or-1/2i√2 the answer? If this is not the answer, showing me what the correct answer is and how to get that answer will be very helpful. Thank you, in advance also.

2007-07-23 03:34:28 · 2 answers · asked by jumba 1 in Science & Mathematics Mathematics

2 answers

2x² + 4x + 3 = 0
x = [- 4 ± √(16 - 24)] / 4
x = [- 4 ± √(- 8) ] / 4
x = [- 4 ± √(8 i²)] / 4
x = [- 4 ± i √(8)] / 4
x = [- 4 ± i (2√2] / 4
x = - 1 ± i √(2) / 2
This is similar to your answer.

2007-07-23 07:54:04 · answer #1 · answered by Como 7 · 0 0

2x^2+4x+3=0 is a quadratic equation in the form ax^2+bx+c=0 using quadratic formula

x = [ -b - √(b^2 - 4ac) ] / [ 2a ] ; [ -b + √(b^2 - 4ac) ] / [ 2a ]

the answer is -1 - i √2 / 2 and -1 + i√2 / 2

2007-07-23 10:54:07 · answer #2 · answered by Anonymous · 0 0

fedest.com, questions and answers