Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

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