菁寮國中八十八學年度第一學期

                                                           (回網路試題 )

                                                       班級______           座號_________     姓名______________

. .

1.(     ) ? (1) ( 2 + 3 )2 = 22 + 32 (2) ( a – b)2 = a2 – b2

              (3) (5 – 3 )2 = 52 – 2 * 5 * 3 +32

2. (     ) –2x2 – 5x +8 (1) 0 (2) 2 (3) 5 (4) 8

3.(     ) ( 2x – 1 ) ( 3x – 4 ) , x (1) – 11 (2) – 5

             (3) 4 (4) 6

4.(     ) x2 – 4 x – 12 (1) x – 6 (2) x – 2

               (3) x – 3 (4) x2 – 4 x – 12

5. (     ) x + 2 ? (1) x 2+ 4 (2) x2 – 4 x – 12

       (3) x 2– 3x (4) x2 + 4x + 4


. . .

        1. a + b = 5 a b = 3. a2 + b2 = ________ .

2. (1) ( a – b ) ( c + d) = _________ .   

   (2) (1) c a . b b .
      會 ?

       3. ?

(1) ( x – 4 ) + ( - x – 2 x2 + 4 ) = _________ .

(2) ( x + 3 )2 –( x – 3 )2 = ________ .

(3) ( - 2 – 7 x ) (- 2 + 7 x ) = _________ .

      4. ( 6 x3 + x2 – 3 x – 1 ) ( 2 x + 1 ) _________ .

      5. : 3 x + ( b – 3 ) x + c ( a – 1 ) x + 3 x –7 ,

         a + b + c = _________ .

      6. + (x) x – 3 x – 2 4 x – 3 x + 7 , + ( x ) = _________ .
      7. 5. 12. a . a = _________

      8. , a b = 4 . a c = 3 . b d = 5 . d e = 3 , a = d e b = 900

        則 c d = _______

      9.

           (1) x2 ÷(- X ) = _______

          ( 2) x2 ÷2x = ________

           (3) 2 x ÷___ = - 6 x 2

 

. 20

1. ( - 2 x2 1 ) ÷( - 3X + 2 )

2. X 6 X + 4 X + 3 a ( x + 1 ) + b ( X + 1)

3. 20 , 7