Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(-(p+q+3)=-p-q-3\)
2. \(-2(-2xy+3y+1)=4xy-6y-2\)
3. \(+(-3x-4xy-1)=-3x-4xy-1\)
4. \(-2(x+xy+1)=-2x-2xy-2\)
5. \(-2(8p-1)=-16p+2\)
6. \(2(2a+4b-2)=4a+8b-4\)
7. \(2(-3xy-y-3)=-6xy-2y-6\)
8. \(+(-2x+2y+3)=-2x+2y+3\)
9. \(-(3x-3xy-1)=-3x+3xy+1\)
10. \(+(-8y-2)=-8y-2\)
11. \(2(3xy-4y+4)=6xy-8y+8\)
12. \(+(3xy-y-3)=3xy-y-3\)