document.write( "Question 42155: i need to solve this equation 7x squared + 2x-2=0 bye using the quadradic formula \n" ); document.write( "
Algebra.Com's Answer #27305 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Okay, from \n" ); document.write( "7x^2 + 2x - 2 = 0, we have \n" ); document.write( "x = (-2 ± sqrt(4 - 4*7*(-2))) / 14 \n" ); document.write( "x = (-2 ± sqrt(4 + 56)) / 14 \n" ); document.write( "x = (-2 ± sqrt(60)) / 14 \n" ); document.write( "x = (-2 ± 2*sqrt(15)) / 14 \n" ); document.write( "x = (-1 ± sqrt(15)) / 7 \n" ); document.write( " |