document.write( "Question 224409:
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document.write( "if 2x^2 - 14x + 29 = p(x+q)^2 +r holds for all real values of x, find the values of p,q and r. Hence, state the minimum value of the function and the corresponding value of x..\r
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document.write( "im stuck.. plz help :( \n" );
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Algebra.Com's Answer #167637 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! if 2x^2 - 14x + 29 = p(x+q)^2 +r holds for all real values of x, find the values of p,q and r. Hence, state the minimum value of the function and the corresponding value of x.. \n" ); document.write( "--------------------------------- \n" ); document.write( "2x^2 - 14x + 29 = px^2 + 2pqx +pq^2 +r \n" ); document.write( "---- \n" ); document.write( "Matching up the coefficients you get: \n" ); document.write( "p = 2 \n" ); document.write( "2pq= -14 \n" ); document.write( "pq^2+r = 29 \n" ); document.write( "--------------- \n" ); document.write( "So: \n" ); document.write( "p = 2 \n" ); document.write( "---- \n" ); document.write( "q = (14/4) = 7/2 \n" ); document.write( "--- \n" ); document.write( "2(7/2)^2+r = 29 \n" ); document.write( "(49/2) + r = (58/2) \n" ); document.write( "r = 9/2 \n" ); document.write( "---------- \n" ); document.write( "Hence, state the minimum value of the function and the corresponding value of x \n" ); document.write( "a = 2 ; b = -14 \n" ); document.write( "min occurs at x = -b/2a = 14/4 = 7/2 \n" ); document.write( "---------------------------------------------- \n" ); document.write( "2x^2 - 14x + 29 \n" ); document.write( "Minimum value is 2(29)^2 - 14*29 +29 = 1305 \n" ); document.write( "============================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "---------------------------- \n" ); document.write( " \n" ); document.write( " |