Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((9y-2)^2-(18y-4)\)
2. \((b+3)(b+4)-(2b+4)(b+3)\)
3. \((b+2)(b+9)+(4b-4)(b+2)\)
4. \((8b+5)^2+(24b+15)\)
5. \((3a-5)(a+1)+(3a-5)(4a+8)\)
6. \((7y+9)(y+9)+(7y+9)(4y+9)\)
7. \((q-3)(q+3)+(3q-3)(q-3)\)
8. \((x-7)(x+8)+(4x-9)(x-7)\)
9. \((6x-5)(x+4)+(6x-5)(5x+2)\)
10. \((9y-8)^2+(18y-16)\)
11. \((3a+2)(a-5)-(3a+2)(2a+4)\)
12. \((5s+5)(s-4)+(5s+5)(2s+6)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((9y-2)^2-(18y-4)\\=(9y-2)(9y-2)-2(9y-2)\\=(9y-4)(9y-2)\)
2. \((b+3)(b+4)-(2b+4)(b+3)\\=(b+3)(b+4-2b-4)\\=(b+3)(-b+0)\)
3. \((b+2)(b+9)+(4b-4)(b+2)\\=(b+2)(b+9+4b-4)\\=(b+2)(5b+5)\)
4. \((8b+5)^2+(24b+15)\\=(8b+5)(8b+5)+3(8b+5)\\=(8b+8)(8b+5)\)
5. \((3a-5)(a+1)+(3a-5)(4a+8)\\=(3a-5)(a+1+4a+8)\\=(3a-5)(5a+9)\)
6. \((7y+9)(y+9)+(7y+9)(4y+9)\\=(7y+9)(y+9+4y+9)\\=(7y+9)(5y+18)\)
7. \((q-3)(q+3)+(3q-3)(q-3)\\=(q-3)(q+3+3q-3)\\=(q-3)(4q+0)\)
8. \((x-7)(x+8)+(4x-9)(x-7)\\=(x-7)(x+8+4x-9)\\=(x-7)(5x-1)\)
9. \((6x-5)(x+4)+(6x-5)(5x+2)\\=(6x-5)(x+4+5x+2)\\=(6x-5)(6x+6)\)
10. \((9y-8)^2+(18y-16)\\=(9y-8)(9y-8)+2(9y-8)\\=(9y-6)(9y-8)\)
11. \((3a+2)(a-5)-(3a+2)(2a+4)\\=(3a+2)(a-5-2a-4)\\=(3a+2)(-a-9)\)
12. \((5s+5)(s-4)+(5s+5)(2s+6)\\=(5s+5)(s-4+2s+6)\\=(5s+5)(3s+2)\)