Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
- \((2x-6)(x-4)-(2x-6)(3x+3)\)
- \((x-5)(x-3)+(2x+2)(x-5)\)
- \((8p-8)(p-1)-(8p-8)(3p-6)\)
- \((9y+2)^2-(45y+10)\)
- \((3q-8)(q-6)+(3q-8)(2q-7)\)
- \((s-8)(s+8)-(2s+8)(s-8)\)
- \((a+1)^2+(5a+5)\)
- \((3b-8)^2+(6b-16)\)
- \((4x-1)(x-3)-(4x-1)(3x+9)\)
- \((7p+6)(p+2)+(7p+6)(2p-4)\)
- \((s+2)(s-9)+(2s-1)(s+2)\)
- \((6y-2)(y+6)-(6y-2)(5y+2)\)
Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
Verbetersleutel
- \((2x-6)(x-4)-(2x-6)(3x+3)\\=(2x-6)(x-4-3x-3)\\=(2x-6)(-2x-7)\)
- \((x-5)(x-3)+(2x+2)(x-5)\\=(x-5)(x-3+2x+2)\\=(x-5)(3x-1)\)
- \((8p-8)(p-1)-(8p-8)(3p-6)\\=(8p-8)(p-1-3p+6)\\=(8p-8)(-2p+5)\)
- \((9y+2)^2-(45y+10)\\=(9y+2)(9y+2)-5(9y+2)\\=(9y-3)(9y+2)\)
- \((3q-8)(q-6)+(3q-8)(2q-7)\\=(3q-8)(q-6+2q-7)\\=(3q-8)(3q-13)\)
- \((s-8)(s+8)-(2s+8)(s-8)\\=(s-8)(s+8-2s-8)\\=(s-8)(-s+0)\)
- \((a+1)^2+(5a+5)\\=(a+1)(a+1)+5(a+1)\\=(a+6)(a+1)\)
- \((3b-8)^2+(6b-16)\\=(3b-8)(3b-8)+2(3b-8)\\=(3b-6)(3b-8)\)
- \((4x-1)(x-3)-(4x-1)(3x+9)\\=(4x-1)(x-3-3x-9)\\=(4x-1)(-2x-12)\)
- \((7p+6)(p+2)+(7p+6)(2p-4)\\=(7p+6)(p+2+2p-4)\\=(7p+6)(3p-2)\)
- \((s+2)(s-9)+(2s-1)(s+2)\\=(s+2)(s-9+2s-1)\\=(s+2)(3s-10)\)
- \((6y-2)(y+6)-(6y-2)(5y+2)\\=(6y-2)(y+6-5y-2)\\=(6y-2)(-4y+4)\)