Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(2(2x-2y-1)=4x-4y-2\)
2. \(-(-a-4b+3)=a+4b-3\)
3. \(2(x+xy-1)=2x+2xy-2\)
4. \(-2(-x-2xy-3)=2x+4xy+6\)
5. \(-(4a+2)=-4a-2\)
6. \(3(-6a+2)=-18a+6\)
7. \(+(-xy+3y+1)=-xy+3y+1\)
8. \(2(-7x+1)=-14x+2\)
9. \(-(2xy-2y-4)=-2xy+2y+4\)
10. \(-4(-2x+1)=8x-4\)
11. \(-3(-q+2)=3q-6\)
12. \(-2(-p-3q+1)=2p+6q-2\)