Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

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