document.write( "Question 1182015: Keller performed the work below to express the polynomial in factored form:
\n" ); document.write( "r(x) = x^4 - 8x^2 - 9
\n" ); document.write( "r(x) = (x^2 + 1)(x^2 - 9)
\n" ); document.write( "(x) = (x + 1)(x - 1)(x + 3)(x - 3)
\n" ); document.write( "Explain the error he made and complete the factorization correctly.
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Algebra.Com's Answer #811974 by josgarithmetic(39630)\"\" \"About 
You can put this solution on YOUR website!
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