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          A19B18C16D15
          (x)ϵд
          P(gun)(x)}

          ĿД(sh)W(xu) Դ

          D54ķÿС߅L1cOABڷ񼈵Ľccϣڵރ(ni)ĸccCʹABCe3t@ӵcCУ
          A2B3C4D5

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          ij17Ů\ӆTӼӖ(xn)סް2g3gҪÿgҪסMЎ׷Nס
          A5NB4NC3ND2N

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          һС80ăλ(sh)λϵĔ(sh)ʮλϵĔ(sh)С1t@λ(sh)
           

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          20λͬW(xu)ֲ九(ji)@칲N52Ø磬ÿ˷N3Ůÿ˷N2ãO(sh)xŮy(j)}⣬з̽M_ǣ
          A
          x+y=52
          3x+2y=20
          B
          x+y=52
          2x+3y=20
          C
          x+y=20
          2x+3y=52
          D
          x+y=20
          3x+2y=52

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          ֪ab0нY(ji)Փe`ǣ
          Aa+mb+m
          B
          a
          b
          C-2a-2b
          D
          a
          2
          b
          2

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          ʽ1-x0Ľ⼯ڔ(sh)Sϱʾ_ǣ
          ABCD

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          ʽM
          x-3-1
          -
          1
          2
          x1
          Ľ⼯ڔ(sh)Sϱʾ_ǣ
          A
          B
          C
          D

          鿴𰸺ͽ>>

          ĿД(sh)W(xu) Դ

          ʽM
          x+a0
          1-2xx-2
          ot(sh)aȡֵǣ
          Aa-1Ba-1
          Ca1Da-1

          鿴𰸺ͽ>>

          ͬ(x)Դ