Chuyên đề phuơng trình ĐS.L9(P.H)

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Chuyên đề phuơng trình ĐS.L9(P.H)

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Biªn so¹n: ph¹m hinh. Chuyªn ®Ò C¸c d¹ng bµi tËp vÒ ph¬ng tr×nh Bµi tËp 1: 2 2 3 0 4 6 4 16 17 8 23 2 19 2 1 4 2 1 4 x x x x x x x x x x x − − = − + = + + = − + − = + = + + 4 1 3 4 1 3 4 4 2 5 1 3 2 1 1 1 8 11 11 4 x x x x x x x x x x x x x x x + − + = + + + = − − − = − + − = − + + + + − + = 1 1x x x+ + − = Bµi tËp 2: 8 2 7 8 2 7 4 3 4 1 8 6 1 1 2 3 2 5 2 2 5 2 2 6 9 6 9 6 3 2 1 2 1 2 x x x x x x x x x x x x x x x x x x x x x + + + + + − + = + − − + + − − = + + − + − − − = + − + − − = + + − + − − = Bµi tËp 3: 2 2 2 2 2 2 2 6 3 3 2 1 4 1 3 2 2 2 2 2 2 2 3 3 3 3 x x x x x x x x x x x x x x x x x x x x x x x − = + − − − − = + + − + + − + = + + − − + − + = + + − − ( ) ( ) ( ) 2 2 2 1 2 2 1 1 4 1 2 10 1 3 2 x x x x x x x x x − − + = − + − − = + = + − + - 1 - Biªn so¹n: ph¹m hinh. Bµi tËp 4: ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) 2 4 5 7 8 4 1 3 5 7 297 1 2 3 24 4 1 12 1 3 2 4 4 4 5 6 10 12 3 x x x x x x x x x x x x x x x x x x x x x + + + + = − + − + = + + + = + − + + = + + + + = Bµi tËp 5: ( ) ( ) ( ) ( ) ( ) 2 2 2 2 2 2 2 2 2 1 2 1 1 1 3 2 3 2 2 3 2 8 6 1 2 2 3 2 1 3 2 1 1 3 2 2 3 2 2 4 4 2 3 2 3 1 3 2 1 8 1 x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x = − − − − + + + = + + + − + + + − = + − − = − − − − + − + + − = − + − + − = − − + − + + − = − Bµi tËp 6: 4 4 2 4 1; 4 12 9 0x x x x x− = − + − = ( ) ( ) ( ) ( ) ( ) ( ) 2 2 2 2 2 2 2 2 2 2 2 3 2 25 15; 11 1 5 9 20 2 3 10 3 1 3 1 8 1 3 1 5 1 2 2 x x x x x x x x x x x x x x x x x x x + = + = + + + + = + + + = + + + = − + + = + ( ) ( ) 2 2 2 2 4 1 1 2 2 1 2 1 2 1 2 1 x x x x x x x x x − + = + + − + − = − − 36112 2 =+++ xxx xxx −++=+ 24422169 2 - 2 - Biªn so¹n: ph¹m hinh. Bµi tËp 7: ( ) ( ) ( ) 4 2 4 2 2 2 2 4 3 2 2 2 2 5 4 0 ; 2 2 2 2 0 2 23 2 120 0 4 8 5 0 3 3 9 3 168 46 0 2 2 4 x x x x x x x x x x x x x x x x x − + = − + + = − − − + = − + − =   + − −     + − =  ÷  ÷  ÷ − + −       ( ) ( ) ( ) ( ) 2 2 2 2 2 2 3 15 2 5 1 2 2 4 3 1 10 17 17 9 5 2 1 7 10 3 x x x x x x x x x x x x x x x x + + + + = − + + − + = + − + − = + − − + + + = 2 2 2 3 2 3 5 1 5 2 4 2 2 2 1 4 2 2 2 12 4 4 12 47 1 1 1 6 x x x x x x x x x x x x x x x x x x + = + + + = + + + + + = + + + + + = Bµi tËp 8: 2 2 3 3 2 3 3 3 3 10 2 2 3 1 3 10 5 1 1 2 5 5 1 2 2 1 24 12 6 2 1 1 x x x x x x x x x x x x x x − − + = + + − = + + − = + + = + = − + + − = − + − = - 3 -

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