Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(-2(-2a-3b-4)=4a+6b+8\)
2. \(+(-3a-4b+4)=-3a-4b+4\)
3. \(-2(-xy+4y+1)=2xy-8y-2\)
4. \(-3(-8x+1)=24x-3\)
5. \(2(3x+3y-3)=6x+6y-6\)
6. \(-(-7p-1)=7p+1\)
7. \(4(2b+1)=8b+4\)
8. \(-(-2xy-3y+3)=2xy+3y-3\)
9. \(-2(-7q+2)=14q-4\)
10. \(3(-4b-2)=-12b-6\)
11. \(-2(a-b-2)=-2a+2b+4\)
12. \(2(3a-4b-4)=6a-8b-8\)