document.write( "Question 1013006: For what values of k will the equation $\"+x%5E2+-%28k-2%29x-12=0\"$ have roots that are equal but opposite in sign \n" ); document.write( "

Algebra.Com's Answer #629161 by Theo(13342) $\"\"$ $\"About$

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when k = 2, the equation of x^2 - (k-2)x - 12 = 0 becomes x^2 - -0x - 12 = 0 which becomes x^2 - 12 = 0.
\n" ); document.write( "add 12 to both sides of this equation to get x^2 = 12.
\n" ); document.write( "take the square root of this equation to get x = plus or minus sqrt(12).\r
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