document.write( "Question 90447: Using Descartes Rule of Signs, determine the number of possible positive real roots of the polynomial 3x4 + 5x3 + 8x2 - 7x + 2. \n" ); document.write( "

Algebra.Com's Answer #65648 by Nate(3500) $\"\"$ $\"About$

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f(x) = 3x4 + 5x3 + 8x2 - 7x + 2
\n" ); document.write( "(+) (+) (+) (-) (+) ~> 2 sign changes
\n" ); document.write( "Pos: 2
\n" ); document.write( "Neg: ~
\n" ); document.write( "Img: ~
\n" ); document.write( "f(-x) = 3x4 - 5x3 + 8x2 + 7x + 2
\n" ); document.write( "(+) (-) (+) (+) (+) ~> 2 sign changes
\n" ); document.write( "Pos: 2 . 2 . 0 . 0
\n" ); document.write( "Neg: 2 . 0 . 2 . 0
\n" ); document.write( "Img: 0 . 2 . 2 . 4 \n" ); document.write( "

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