Toán Lớp 6: c)10 chia hết cho x-2
d)5 chia hết x
e)7 chia hết x+1
g)8 chia hết x-2
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Toán Lớp 6: c)10 chia hết cho x-2
d)5 chia hết x
e)7 chia hết x+1
g)8 chia hết x-2
Comments ( 2 )
10 vdots x – 2
=> x – 2 in ƯC(10)
ƯC(10) = { – 1 ; – 2 ; – 5 ; – 10 ; 1 ; 2 ; 5 ; 10 }
x = { -3 ; -4 ; -7 ; -12 ; -1 ; 0 ; 3 ; 8 }
5 vdots x
=> x in ƯC(5)
ƯC(5) = { -1 ; -5 ; 1 ; 5 }
7 vdots x + 1
=> x + 1 in ƯC(7)
ƯC(7) = {- 1; – 7 ; 1 ; 7 }
x = 2 ; 8 ; 0 ; 6
8 vdots x – 2
=> x – 2 in ƯC(8)
ƯC(8) = { -1 ; – 2 ; – 4 ; -8 ; 1 ; 2 ; 4; 8 }
x = -3 ; -4 ; -6 ; – 10 ; -1 ; 0 ; 2 ; 6 }
10⋮ x − 2
⇒ x − 2 ∈ ƯC
ƯC (10 ) = { −1; −2; −5; −10; 1; 2; 5; 10 }
x ={ −3; −4; −7; −12; −1; 0; 3; 8}
5⋮ x
⇒ x ∈ ƯC ( 5 )
ƯC ( 5 ) = { −1; −5; 1; 5 }
7⋮ x + 1
⇒ x+1 ∈ ƯC ( 7 )
ƯC ( 7 ) = { −1; −7; 1; 7 }
x = { 2 ; 8 ; 0 ; 6 }
8 ⋮ x − 2
⇒ x−2∈ƯC(8)
ƯC(8)={ −1; −2; −4; −8; 1; 2; 4; 8}
x = { −3; −4; −6; −10; −1; 0; 2; 6 }
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