Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(-2(-x+2y+4)=2x-4y-8\)
2. \(-2(x-3xy-1)=-2x+6xy+2\)
3. \(3(-y-1)=-3y-3\)
4. \(+(-3p+2q-4)=-3p+2q-4\)
5. \(2(-8y-1)=-16y-2\)
6. \(+(-x-2y-3)=-x-2y-3\)
7. \(4(-7x+1)=-28x+4\)
8. \(+(2x+4xy+3)=2x+4xy+3\)
9. \(-3(-5p-1)=15p+3\)
10. \(+(-2x-3y+1)=-2x-3y+1\)
11. \(-3(-6p+1)=18p-3\)
12. \(-4(5b+2)=-20b-8\)