Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
- \((5p+8)(p+1)+(5p+8)(2p-2)\)
- \((6b-5)^2+(30b-25)\)
- \((4a-3)^2-(12a-9)\)
- \((y-4)(y+1)+(3y-6)(y-4)\)
- \((x-4)(x+2)+(5x+8)(x-4)\)
- \((q-9)^2+(5q-45)\)
- \((7y+9)(y-7)+(7y+9)(3y+7)\)
- \((7s+1)^2+(14s+2)\)
- \((3s-1)(s-3)-(3s-1)(4s+8)\)
- \((x+1)(x+1)-(3x+7)(x+1)\)
- \((q-5)(q-7)-(5q-2)(q-5)\)
- \((s+3)(s+2)-(5s-7)(s+3)\)
Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
Verbetersleutel
- \((5p+8)(p+1)+(5p+8)(2p-2)\\=(5p+8)(p+1+2p-2)\\=(5p+8)(3p-1)\)
- \((6b-5)^2+(30b-25)\\=(6b-5)(6b-5)+5(6b-5)\\=(6b+0)(6b-5)\)
- \((4a-3)^2-(12a-9)\\=(4a-3)(4a-3)-3(4a-3)\\=(4a-6)(4a-3)\)
- \((y-4)(y+1)+(3y-6)(y-4)\\=(y-4)(y+1+3y-6)\\=(y-4)(4y-5)\)
- \((x-4)(x+2)+(5x+8)(x-4)\\=(x-4)(x+2+5x+8)\\=(x-4)(6x+10)\)
- \((q-9)^2+(5q-45)\\=(q-9)(q-9)+5(q-9)\\=(q-4)(q-9)\)
- \((7y+9)(y-7)+(7y+9)(3y+7)\\=(7y+9)(y-7+3y+7)\\=(7y+9)(4y+0)\)
- \((7s+1)^2+(14s+2)\\=(7s+1)(7s+1)+2(7s+1)\\=(7s+3)(7s+1)\)
- \((3s-1)(s-3)-(3s-1)(4s+8)\\=(3s-1)(s-3-4s-8)\\=(3s-1)(-3s-11)\)
- \((x+1)(x+1)-(3x+7)(x+1)\\=(x+1)(x+1-3x-7)\\=(x+1)(-2x-6)\)
- \((q-5)(q-7)-(5q-2)(q-5)\\=(q-5)(q-7-5q+2)\\=(q-5)(-4q-5)\)
- \((s+3)(s+2)-(5s-7)(s+3)\\=(s+3)(s+2-5s+7)\\=(s+3)(-4s+9)\)