document.write( "Question 284790: Suppose that r1 and r2 are the roots of the quadratic equation ax2 + bx + c = 0. \r
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\n" ); document.write( "(x – r1)(x – r2)= x2 – (r1 + r2)x + r1r2.\r
\n" ); document.write( "\n" ); document.write( "Explain how to use this result to check the solutions of a quadratic equation of the form x2 + bx + c. Then use the result to check that –3 + 2i and –3 – 2i are solutions of the equation x2 + 6x + 13 =0.
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Algebra.Com's Answer #206600 by richwmiller(17219) $\"\"$ $\"About$

You can put this solution on YOUR website!
(x-(–3 + 2i))*(x-(–3 – 2i) )=0
\n" ); document.write( "use foil
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