document.write( "Question 84113: x2 + 3x - 13 = 0 \r
\n" ); document.write( "\n" ); document.write( "9x2 - 16 = 0 \r
\n" ); document.write( "\n" ); document.write( "x2-7x+12=0\r
\n" ); document.write( "\n" ); document.write( "3x2 - 2x + 7 = 0 \n" ); document.write( "
Algebra.Com's Answer #60567 by checkley75(3666)\"\" \"About 
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USING THE QUADRATIC EQUATION WE GET:
\n" ); document.write( "X=(-3+-SQRT[3*3-4*1*-13])/2*1
\n" ); document.write( "X=(-3+-SQRT[9+52])/2
\n" ); document.write( "X=(-3+-SQRT61)/2
\n" ); document.write( "X=(-3+-7.81)/2
\n" ); document.write( "X=(-3+7.81)/2
\n" ); document.write( "X=4.81/2
\n" ); document.write( "X=2.405 ANSWER.
\n" ); document.write( "X=(-3-7.81)/2
\n" ); document.write( "X=-10.81/2
\n" ); document.write( "X=-5.405 ANSWER.
\n" ); document.write( "--------------------------------------------------------
\n" ); document.write( "9X^2-16=0
\n" ); document.write( "(3X+4)(3X-4)=0
\n" ); document.write( "3X+4=0
\n" ); document.write( "3X=-4
\n" ); document.write( "X=-4/3 ANSWER.
\n" ); document.write( "3X-4=0
\n" ); document.write( "3X=4
\n" ); document.write( "X=4/3 ANSWER.
\n" ); document.write( "--------------------------------------------------------
\n" ); document.write( "X^2-7X+12=0
\n" ); document.write( "(X-4)(X-3)=0
\n" ); document.write( "X-4=0
\n" ); document.write( "X=4 ANSWER.
\n" ); document.write( "X+4=0
\n" ); document.write( "X=-4 ANSWER.
\n" ); document.write( "----------------------------------------------------------
\n" ); document.write( "3X^2-2X+7=0
\n" ); document.write( "using the quadratic equation we get:
\n" ); document.write( "X=(2+-SQRT[-2*-2-4*3*7])/2*3
\n" ); document.write( "X=(2+-SQRT[4-84])/6
\n" ); document.write( "X=(2+-SQRT-80])/6
\n" ); document.write( "X=(2+-8.944i/6
\n" ); document.write( "X=2/6+8.944i/6
\n" ); document.write( "X=.333+1.49i ANSWER.
\n" ); document.write( "X=.333-1.49i ANSWER.\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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