document.write( "Question 147552: How many positive real solutions are there in:
\n" ); document.write( "f(x) = -2x^4 + 3x^3 + 7x^2 + 2
\n" ); document.write( "a. 0
\n" ); document.write( "b. 2
\n" ); document.write( "c. 1
\n" ); document.write( "d. None, there is no x-term \n" ); document.write( "

Algebra.Com's Answer #107926 by Nate(3500) $\"\"$ $\"About$

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c.
\n" ); document.write( "because there is only one sign change for f(x) \n" ); document.write( "

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