Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

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