Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(2(2a-3b+2)=4a-6b+4\)
2. \(-2(-3c+2)=6c-4\)
3. \(2(7c-1)=14c-2\)
4. \(-2(-2x+xy-1)=4x-2xy+2\)
5. \(-2(-8a-1)=16a+2\)
6. \(-2(-2q+2)=4q-4\)
7. \(+(-2x+4y-2)=-2x+4y-2\)
8. \(-2(3x-4xy+1)=-6x+8xy-2\)
9. \(2(3xy-4y+2)=6xy-8y+4\)
10. \(-(7c-1)=-7c+1\)
11. \(-(3p+4q+2)=-3p-4q-2\)
12. \(-(-3x-xy+2)=3x+xy-2\)