Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(2(2a+2b-1)=4a+4b-2\)
2. \(-2(x+2y-2)=-2x-4y+4\)
3. \(+(-3xy+2y-3)=-3xy+2y-3\)
4. \(4(6a-1)=24a-4\)
5. \(-4(-8a+1)=32a-4\)
6. \(-(a-3b-2)=-a+3b+2\)
7. \(-2(-p-3q-4)=2p+6q+8\)
8. \(-4(8a+2)=-32a-8\)
9. \(2(-2p-q+3)=-4p-2q+6\)
10. \(+(-7c+2)=-7c+2\)
11. \(-2(2x-2xy+3)=-4x+4xy-6\)
12. \(2(-3a+3b-4)=-6a+6b-8\)