Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(+(2xy-y+3)=2xy-y+3\)
2. \(-2(2xy+2y+1)=-4xy-4y-2\)
3. \(2(2xy+4y+1)=4xy+8y+2\)
4. \(-2(7a-2)=-14a+4\)
5. \(-2(-3a+3b+2)=6a-6b-4\)
6. \(2(-4a-1)=-8a-2\)
7. \(-3(6p+2)=-18p-6\)
8. \(-3(5b+2)=-15b-6\)
9. \(-2(-3xy-y+2)=6xy+2y-4\)
10. \(+(-2a+3b+3)=-2a+3b+3\)
11. \(2(5a+2)=10a+4\)
12. \(-(a+3b-1)=-a-3b+1\)