document.write( "Question 245722: How to solve 2x^2 + 1 = 0 using imaginary/complex numbers \n" ); document.write( "
Algebra.Com's Answer #180355 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! 2x^2=-1 \n" ); document.write( "divide by 2 \n" ); document.write( "x^2=-1/2 \n" ); document.write( "this is where imaginary numbers come in. \n" ); document.write( "get sqrt of both sides\r \n" ); document.write( "\n" ); document.write( "x=+\- i/sqrt(2) where i=sqrt(-1) \n" ); document.write( "x=+ i/sqrt(2) \n" ); document.write( "x=- i/sqrt(2) \n" ); document.write( " \n" ); document.write( " |