document.write( "Question 267263: A polynomial in x has degree 3. The coefficient of x^2 is 3 less than the coefficient of x^3. The coefficient of x is three times the coefficient of x^2. The remaining coefficient is 2 more than the coefficient of x^3. The sum of the coefficients is -4. Find the polynomial. \n" ); document.write( "
Algebra.Com's Answer #196282 by ankor@dixie-net.com(22740)\"\" \"About 
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We will try to get every variable in terms of a
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\n" ); document.write( "A polynomial in x has degree 3.
\n" ); document.write( "ax^3 + bx^2 + cx + d
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\n" ); document.write( "The coefficient of x^2 is 3 less than the coefficient of x^3.
\n" ); document.write( "b = a - 3
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\n" ); document.write( "The coefficient of x is three times the coefficient of x^2.
\n" ); document.write( "c = 3b
\n" ); document.write( "Replace b with (a-3)
\n" ); document.write( "c = 3(a-3)
\n" ); document.write( "c = 3a - 9
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\n" ); document.write( "The remaining coefficient is 2 more than the coefficient of x^3.
\n" ); document.write( "d = a + 2
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\n" ); document.write( "The sum of the coefficients is -4. Find the polynomial.
\n" ); document.write( "a + b + c + d = -4
\n" ); document.write( "Substitute, solve for a
\n" ); document.write( "a + (a-3) + (3a-9) + (a+2) = -4
\n" ); document.write( "6a - 10 = -4
\n" ); document.write( "6a = -4 + 10
\n" ); document.write( "6a = 6
\n" ); document.write( "a = 1
\n" ); document.write( "then
\n" ); document.write( "b = 1 - 3
\n" ); document.write( "b = -2
\n" ); document.write( "and
\n" ); document.write( "c = 3(1) - 9
\n" ); document.write( "c = -6
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\n" ); document.write( "d = 1 + 2
\n" ); document.write( "d = 3
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\n" ); document.write( "x^3 - 2x^2 - 6x + 3; is the polynomial
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