document.write( "Question 734664: Use the quadratic formula to solve the equation. Give exact answers
\n" ); document.write( "x^2+2x=8 \n" ); document.write( "

Algebra.Com's Answer #449087 by mananth(16946) $\"\"$ $\"About$

You can put this solution on YOUR website!
x^2+4x-8\r
\n" ); document.write( "\n" ); document.write( "compare with ax^2+bx+c\r
\n" ); document.write( "\n" ); document.write( "a=1, b=2,c=-8\r
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\n" ); document.write( "b^2-4ac= 4 + 32
\n" ); document.write( "b^2-4ac= 36
\n" ); document.write( " $\"%09sqrt%28%0936%09%29=%096%09\"$
\n" ); document.write( " $\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( " $\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( "x1=( -2 + 6 )/ 2
\n" ); document.write( "x1= 2.00
\n" ); document.write( " $\"x2=%28-b-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( "x2=( -2 -6 ) / 2
\n" ); document.write( "x2= -4.00
\n" ); document.write( " \n" ); document.write( "

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