document.write( "Question 1187429: Please help I am confused thank You. \r
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document.write( "Check that the following expressions are equivalent using the values x = -2, -1, 0, 1, 2.
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document.write( "(12x^2−27)/(3) and −(−2x+3)(2x+3)\r
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document.write( "Prove the equivalence of the two expressions in the previous question using algebraic manipulation. \n" );
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Algebra.Com's Answer #818392 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Check that the following expressions are equivalent using the values x = -2, -1, 0, 1, 2. \n" ); document.write( "(12x^2−27)/(3) and −(−2x+3)(2x+3) \n" ); document.write( "------------ \n" ); document.write( "Sub the values for x. \n" ); document.write( "--- \n" ); document.write( "For x = -2: \n" ); document.write( "-- \n" ); document.write( "(12*(-2)^2 - 27)/3 = -(-2*-2 + 3)*(2*-2 +3) \n" ); document.write( "(12*4 - 27)/3 = -(4 + 3)*(-4 + 3) \n" ); document.write( "21/3 = -7*-1 \n" ); document.write( "7 = 7 \n" ); document.write( "=============== \n" ); document.write( "Do the same for the other values. \n" ); document.write( "==================================== \n" ); document.write( "Prove the equivalence of the two expressions in the previous question using algebraic manipulation. \n" ); document.write( "------ \n" ); document.write( "(12x^2−27)/(3) and −(−2x+3)(2x+3) \n" ); document.write( "4x^2 - 9 = (2x-3)*(2x+3) \n" ); document.write( "4x^2 - 9 = 4x^2 - 9 \n" ); document.write( " \n" ); document.write( " |