Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(2(-2xy+y-4)=-4xy+2y-8\)
2. \(+(-2x-4y-1)=-2x-4y-1\)
3. \(2(-p+3q+2)=-2p+6q+4\)
4. \(-2(-2p-q+1)=4p+2q-2\)
5. \(2(3x-4xy+3)=6x-8xy+6\)
6. \(-(-2x+3y+4)=2x-3y-4\)
7. \(-(-7x+1)=7x-1\)
8. \(4(-7c-1)=-28c-4\)
9. \(-(-3y+2)=3y-2\)
10. \(-3(-8p+2)=24p-6\)
11. \(+(-2x-3xy+4)=-2x-3xy+4\)
12. \(2(-x+4y+3)=-2x+8y+6\)