Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

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