Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
- \((6s-5)^2+(12s-10)\)
- \((8b+1)^2+(32b+4)\)
- \((3p+2)(p-2)-(3p+2)(2p-4)\)
- \((9q-4)^2+(45q-20)\)
- \((q+7)(q-2)-(4q+5)(q+7)\)
- \((q+9)(q-1)-(4q-3)(q+9)\)
- \((2b+1)^2-(4b+2)\)
- \((y+4)^2+(5y+20)\)
- \((8s+3)^2+(24s+9)\)
- \((3q-8)^2-(12q-32)\)
- \((3q-6)(q-7)+(3q-6)(2q+3)\)
- \((x+3)(x+8)-(5x+8)(x+3)\)
Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
Verbetersleutel
- \((6s-5)^2+(12s-10)\\=(6s-5)(6s-5)+2(6s-5)\\=(6s-3)(6s-5)\)
- \((8b+1)^2+(32b+4)\\=(8b+1)(8b+1)+4(8b+1)\\=(8b+5)(8b+1)\)
- \((3p+2)(p-2)-(3p+2)(2p-4)\\=(3p+2)(p-2-2p+4)\\=(3p+2)(-p+2)\)
- \((9q-4)^2+(45q-20)\\=(9q-4)(9q-4)+5(9q-4)\\=(9q+1)(9q-4)\)
- \((q+7)(q-2)-(4q+5)(q+7)\\=(q+7)(q-2-4q-5)\\=(q+7)(-3q-7)\)
- \((q+9)(q-1)-(4q-3)(q+9)\\=(q+9)(q-1-4q+3)\\=(q+9)(-3q+2)\)
- \((2b+1)^2-(4b+2)\\=(2b+1)(2b+1)-2(2b+1)\\=(2b-1)(2b+1)\)
- \((y+4)^2+(5y+20)\\=(y+4)(y+4)+5(y+4)\\=(y+9)(y+4)\)
- \((8s+3)^2+(24s+9)\\=(8s+3)(8s+3)+3(8s+3)\\=(8s+6)(8s+3)\)
- \((3q-8)^2-(12q-32)\\=(3q-8)(3q-8)-4(3q-8)\\=(3q-12)(3q-8)\)
- \((3q-6)(q-7)+(3q-6)(2q+3)\\=(3q-6)(q-7+2q+3)\\=(3q-6)(3q-4)\)
- \((x+3)(x+8)-(5x+8)(x+3)\\=(x+3)(x+8-5x-8)\\=(x+3)(-4x+0)\)