Kiểm tra đại 8 - tiết 36

   ! "# I. L thuyt(2 đim): $%!&'()(!*++,-!.++/01(!.+2%+(3 456 7    7  x x x x + + + + B. Bi tp(8 đim): Bi 1(2 đim):809!.+&:!  7 7 7  7   D x x x x x − = − − + Bi 2(3 đim):;+<=!>  7 7 7     7  7  7    x x x x x x x x + + −   − + ×  ÷ − + − −   Bi 3?3 đim@AB-!.+ AC ( ) ( ) ( ) ( ) ( ) 7 7       x x x x x + − − − − − @809"(2<+DE9'A+/FG &@ !H-!.+AG +@80%!IJ+DE9'%!IJ+D-!.+&K# 5@80%!IJ(LM+DE9'A+/%!IJ(LMG "# I. L thuyt(2 đim): $%!&'()(!*+--!.+9NOP3 456 ( ) 7 7   ? @  x x x x − − × − − B. Bi tp(8 đim): Bi 1(2 đim):809!.+&:!  7 7 7 7    E x x x x x + = + + + Bi 2(3 đim):;+<=!>  7 7 7     7  7  7    x x x x x x x x − − −   + − ×  ÷ + − − +   Bi 3?3 đim@AB-!.+ C ( ) ( ) ( ) ( ) ( ) 7 7       x x x x x − − − − + − @809"(2<+DE9'+/FG &@ !H-!.+G +@80%!IJ+DE9'%!IJ+D-!.+&K# 5@80%!IJ(LM+DE9'+/%!IJ(LMG . đim@AB - !.+ AC ( ) ( ) ( ) ( ) ( ) 7 7       x x x x x + − − − − − @ 80 9"(2<+DE9'A+/FG &@ !H - !.+AG +@ 80 %!IJ+DE9'%!IJ+D - !.+&K# 5@ 80 %!IJ(LM+DE9'A+/%!IJ(LMG "# I !H - !.+AG +@ 80 %!IJ+DE9'%!IJ+D - !.+&K# 5@ 80 %!IJ(LM+DE9'A+/%!IJ(LMG "# I. L thuyt(2 đim): $%!&'()(!*+ -  - !.+9NOP3 456 (. đim@AB - !.+ C ( ) ( ) ( ) ( ) ( ) 7 7       x x x x x − − − − + − @ 80 9"(2<+DE9'+/FG &@ !H - !.+G +@ 80 %!IJ+DE9'%!IJ+D - !.+&K# 5@ 80 %!IJ(LM+DE9'+/%!IJ(LMG