Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((7y-9)(y-7)-(7y-9)(4y-1)\)
2. \((y+8)(y+9)-(3y-3)(y+8)\)
3. \((a-6)(a+3)-(3a-6)(a-6)\)
4. \((7q-6)^2-(21q-18)\)
5. \((6a+7)(a+2)+(6a+7)(5a+5)\)
6. \((b-7)(b-5)+(4b+6)(b-7)\)
7. \((7q+1)(q-6)+(7q+1)(4q+9)\)
8. \((4q+2)(q+9)+(4q+2)(3q+2)\)
9. \((s+7)^2-(3s+21)\)
10. \((q-4)(q+7)-(5q+7)(q-4)\)
11. \((8y+3)(y-8)-(8y+3)(3y-1)\)
12. \((5p+8)(p-3)-(5p+8)(2p+2)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((7y-9)(y-7)-(7y-9)(4y-1)\\=(7y-9)(y-7-4y+1)\\=(7y-9)(-3y-6)\)
2. \((y+8)(y+9)-(3y-3)(y+8)\\=(y+8)(y+9-3y+3)\\=(y+8)(-2y+12)\)
3. \((a-6)(a+3)-(3a-6)(a-6)\\=(a-6)(a+3-3a+6)\\=(a-6)(-2a+9)\)
4. \((7q-6)^2-(21q-18)\\=(7q-6)(7q-6)-3(7q-6)\\=(7q-9)(7q-6)\)
5. \((6a+7)(a+2)+(6a+7)(5a+5)\\=(6a+7)(a+2+5a+5)\\=(6a+7)(6a+7)\)
6. \((b-7)(b-5)+(4b+6)(b-7)\\=(b-7)(b-5+4b+6)\\=(b-7)(5b+1)\)
7. \((7q+1)(q-6)+(7q+1)(4q+9)\\=(7q+1)(q-6+4q+9)\\=(7q+1)(5q+3)\)
8. \((4q+2)(q+9)+(4q+2)(3q+2)\\=(4q+2)(q+9+3q+2)\\=(4q+2)(4q+11)\)
9. \((s+7)^2-(3s+21)\\=(s+7)(s+7)-3(s+7)\\=(s+4)(s+7)\)
10. \((q-4)(q+7)-(5q+7)(q-4)\\=(q-4)(q+7-5q-7)\\=(q-4)(-4q+0)\)
11. \((8y+3)(y-8)-(8y+3)(3y-1)\\=(8y+3)(y-8-3y+1)\\=(8y+3)(-2y-7)\)
12. \((5p+8)(p-3)-(5p+8)(2p+2)\\=(5p+8)(p-3-2p-2)\\=(5p+8)(-p-5)\)