Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
- \((8p+6)(p-2)-(8p+6)(5p+1)\)
- \((s-5)(s+8)+(2s+9)(s-5)\)
- \((4y-1)(y+1)+(4y-1)(3y-8)\)
- \((7b-8)(b+7)-(7b-8)(4b-3)\)
- \((6y+1)^2-(24y+4)\)
- \((3s-5)(s+7)-(3s-5)(5s-5)\)
- \((q+7)(q+6)-(3q+2)(q+7)\)
- \((y+6)(y-3)-(2y+9)(y+6)\)
- \((8s-1)(s+4)-(8s-1)(3s-6)\)
- \((3a-5)^2+(12a-20)\)
- \((4s-3)^2-(8s-6)\)
- \((9q-2)^2+(36q-8)\)
Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
Verbetersleutel
- \((8p+6)(p-2)-(8p+6)(5p+1)\\=(8p+6)(p-2-5p-1)\\=(8p+6)(-4p-3)\)
- \((s-5)(s+8)+(2s+9)(s-5)\\=(s-5)(s+8+2s+9)\\=(s-5)(3s+17)\)
- \((4y-1)(y+1)+(4y-1)(3y-8)\\=(4y-1)(y+1+3y-8)\\=(4y-1)(4y-7)\)
- \((7b-8)(b+7)-(7b-8)(4b-3)\\=(7b-8)(b+7-4b+3)\\=(7b-8)(-3b+10)\)
- \((6y+1)^2-(24y+4)\\=(6y+1)(6y+1)-4(6y+1)\\=(6y-3)(6y+1)\)
- \((3s-5)(s+7)-(3s-5)(5s-5)\\=(3s-5)(s+7-5s+5)\\=(3s-5)(-4s+12)\)
- \((q+7)(q+6)-(3q+2)(q+7)\\=(q+7)(q+6-3q-2)\\=(q+7)(-2q+4)\)
- \((y+6)(y-3)-(2y+9)(y+6)\\=(y+6)(y-3-2y-9)\\=(y+6)(-y-12)\)
- \((8s-1)(s+4)-(8s-1)(3s-6)\\=(8s-1)(s+4-3s+6)\\=(8s-1)(-2s+10)\)
- \((3a-5)^2+(12a-20)\\=(3a-5)(3a-5)+4(3a-5)\\=(3a-1)(3a-5)\)
- \((4s-3)^2-(8s-6)\\=(4s-3)(4s-3)-2(4s-3)\\=(4s-5)(4s-3)\)
- \((9q-2)^2+(36q-8)\\=(9q-2)(9q-2)+4(9q-2)\\=(9q+2)(9q-2)\)