Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(-(-b+2)=b-2\)
2. \(2(-6b+2)=-12b+4\)
3. \(+(-4q-2)=-4q-2\)
4. \(-(x+y-4)=-x-y+4\)
5. \(-4(7b-2)=-28b+8\)
6. \(2(-2a+2)=-4a+4\)
7. \(-2(-2b-1)=4b+2\)
8. \(+(3x+4y-3)=3x+4y-3\)
9. \(-4(8q+2)=-32q-8\)
10. \(3(3a-2)=9a-6\)
11. \(-2(3x-xy-2)=-6x+2xy+4\)
12. \(3(-x+2)=-3x+6\)