document.write( "Question 1035736: Multiply the following polynomials, then place the answer in the proper location on the grid. Write the answer in descending powers of x. (5x^2 - 7)(5x^2 + 7) \n" ); document.write( "
Algebra.Com's Answer #650385 by Theo(13342)\"\" \"About 
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(5x^2 - 7) * (5x^2 + 7) is equal to:\r
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\n" ); document.write( "\n" ); document.write( "5x^2 * (5x^2 + 7) - 7 * (5x^2 + 7).\r
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\n" ); document.write( "\n" ); document.write( "the first part this is 5x^2 * (5x^2 + 7).\r
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\n" ); document.write( "\n" ); document.write( "5x^2 * (5x^2 + 7) is equal to 5x^2 * 5x^2 + 5x^2 * 7.
\n" ); document.write( "simplify this to get 25x^4 + 35x^2.\r
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\n" ); document.write( "\n" ); document.write( "the second part of this is - 7 * (5x^2 + 7).\r
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\n" ); document.write( "\n" ); document.write( "- 7 * (5x^2 + 7) is equal to -7 * 5x^2 - 7 * 7.
\n" ); document.write( "simplify this to get -35x^2 - 49.\r
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\n" ); document.write( "\n" ); document.write( "put these 2 pieces together to get 25x^4 + 35x^2 - 35x^2 - 49.
\n" ); document.write( "combine like terms to get 25x^4 - 49.\r
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\n" ); document.write( "\n" ); document.write( "the simplified expression is 25x^4 - 49.\r
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