Lettervormen distributiviteit

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Bereken

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

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Bereken

Verbetersleutel

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