Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(-4(-x-1)=4x+4\)
2. \(4(5b+1)=20b+4\)
3. \(2(-q-1)=-2q-2\)
4. \(-(-2x+2xy+1)=2x-2xy-1\)
5. \(2(3c-1)=6c-2\)
6. \(+(-2a+3b+4)=-2a+3b+4\)
7. \(-(-6a-1)=6a+1\)
8. \(2(-2xy+3y+1)=-4xy+6y+2\)
9. \(-2(a+4b+2)=-2a-8b-4\)
10. \(-3(-4c+1)=12c-3\)
11. \(+(x-4y-4)=x-4y-4\)
12. \(2(2x-xy-2)=4x-2xy-4\)