Lettervormen distributiviteit

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Bereken

1. \(-4(-5b+1)\)
2. \(2(-3xy-2y-1)\)
3. \(-2(2p+q-1)\)
4. \(4(-x+1)\)
5. \(-(3xy-4y-4)\)
6. \(+(3xy+4y+4)\)
7. \(-(2a-3b+2)\)
8. \(-4(5a+2)\)
9. \(4(b+2)\)
10. \(-4(8c-2)\)
11. \(3(-3p-2)\)
12. \(-(-6a-1)\)

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Bereken

Verbetersleutel

1. \(-4(-5b+1)=20b-4\)
2. \(2(-3xy-2y-1)=-6xy-4y-2\)
3. \(-2(2p+q-1)=-4p-2q+2\)
4. \(4(-x+1)=-4x+4\)
5. \(-(3xy-4y-4)=-3xy+4y+4\)
6. \(+(3xy+4y+4)=3xy+4y+4\)
7. \(-(2a-3b+2)=-2a+3b-2\)
8. \(-4(5a+2)=-20a-8\)
9. \(4(b+2)=4b+8\)
10. \(-4(8c-2)=-32c+8\)
11. \(3(-3p-2)=-9p-6\)
12. \(-(-6a-1)=6a+1\)