Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
- \((b-8)^2-(2b-16)\)
- \((p-6)(p-8)+(2p-6)(p-6)\)
- \((7x-5)(x+2)-(7x-5)(2x-3)\)
- \((a+1)(a-2)-(4a-9)(a+1)\)
- \((5a+2)(a+6)-(5a+2)(2a+9)\)
- \((9b+5)^2-(18b+10)\)
- \((8p-8)(p-4)+(8p-8)(3p-5)\)
- \((3x+2)^2+(12x+8)\)
- \((6s+5)^2+(30s+25)\)
- \((3q-6)(q-4)-(3q-6)(2q-2)\)
- \((5q-5)(q-8)-(5q-5)(4q-4)\)
- \((8x+5)(x+8)-(8x+5)(5x-7)\)
Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
Verbetersleutel
- \((b-8)^2-(2b-16)\\=(b-8)(b-8)-2(b-8)\\=(b-10)(b-8)\)
- \((p-6)(p-8)+(2p-6)(p-6)\\=(p-6)(p-8+2p-6)\\=(p-6)(3p-14)\)
- \((7x-5)(x+2)-(7x-5)(2x-3)\\=(7x-5)(x+2-2x+3)\\=(7x-5)(-x+5)\)
- \((a+1)(a-2)-(4a-9)(a+1)\\=(a+1)(a-2-4a+9)\\=(a+1)(-3a+7)\)
- \((5a+2)(a+6)-(5a+2)(2a+9)\\=(5a+2)(a+6-2a-9)\\=(5a+2)(-a-3)\)
- \((9b+5)^2-(18b+10)\\=(9b+5)(9b+5)-2(9b+5)\\=(9b+3)(9b+5)\)
- \((8p-8)(p-4)+(8p-8)(3p-5)\\=(8p-8)(p-4+3p-5)\\=(8p-8)(4p-9)\)
- \((3x+2)^2+(12x+8)\\=(3x+2)(3x+2)+4(3x+2)\\=(3x+6)(3x+2)\)
- \((6s+5)^2+(30s+25)\\=(6s+5)(6s+5)+5(6s+5)\\=(6s+10)(6s+5)\)
- \((3q-6)(q-4)-(3q-6)(2q-2)\\=(3q-6)(q-4-2q+2)\\=(3q-6)(-q-2)\)
- \((5q-5)(q-8)-(5q-5)(4q-4)\\=(5q-5)(q-8-4q+4)\\=(5q-5)(-3q-4)\)
- \((8x+5)(x+8)-(8x+5)(5x-7)\\=(8x+5)(x+8-5x+7)\\=(8x+5)(-4x+15)\)