document.write( "Question 248003: solve (x-2)^2(2x+1)less than or equal to 0 \n" ); document.write( "
Algebra.Com's Answer #180781 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve (x-2)^2(2x+1) <= 0 \n" ); document.write( "---------- \n" ); document.write( "1st: Solve the EQUALITY: \n" ); document.write( "x = 2 or x = -1/2 \n" ); document.write( "------------------------------- \n" ); document.write( "Draw a number line and plot the two values, x = -1/2 and x = 2 \n" ); document.write( "-------------------------------- \n" ); document.write( "Now, pick a test value from each of the three line intervals to \n" ); document.write( "see where the solutions for the inequality are. \n" ); document.write( "-------------------------------- \n" ); document.write( "Test is (x-2)^2(2x+1) < 0 \n" ); document.write( "Testing x=-1 you get [(-3)^2](-1) < 0; true so solutions in (-inf,-1/2) \n" ); document.write( "Testing x = 1 you get [(-1)^2(3)] < 0 ; false so no solutions in (-1/2,2) \n" ); document.write( "Testing x = 3 you get [(1)^2*7] < 0 ; false so no solutions in (2,+inf) \n" ); document.write( "----------------------------------- \n" ); document.write( "Final Answer {x | -inf < x < -1/2)} \n" ); document.write( "========================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |