Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

1. \(-2(-5a-2)=10a+4\)
2. \(-(-2b-1)=2b+1\)
3. \(+(3x+2y+4)=3x+2y+4\)
4. \(-4(2a-1)=-8a+4\)
5. \(2(x+3y-2)=2x+6y-4\)
6. \(-(x-2)=-x+2\)
7. \(-2(c-1)=-2c+2\)
8. \(-(-5p-2)=5p+2\)
9. \(-3(-4c+1)=12c-3\)
10. \(2(-4c-2)=-8c-4\)
11. \(4(7a+1)=28a+4\)
12. \(-4(-8q+2)=32q-8\)