Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
- \((5p-4)^2-(20p-16)\)
- \((9a-2)^2-(18a-4)\)
- \((6x+5)^2+(12x+10)\)
- \((p-6)(p-9)-(4p-7)(p-6)\)
- \((3y+8)(y+2)-(3y+8)(4y-9)\)
- \((8q+8)(q-2)-(8q+8)(3q-1)\)
- \((7x+6)(x+9)+(7x+6)(3x+3)\)
- \((4y+5)^2-(16y+20)\)
- \((7q-7)(q+2)+(7q-7)(3q-6)\)
- \((q-8)(q+3)-(5q-2)(q-8)\)
- \((2x+3)^2+(10x+15)\)
- \((2b+1)^2+(10b+5)\)
Zonder de gemeenschappelijke tweeterm af en 'kuis op'.
Verbetersleutel
- \((5p-4)^2-(20p-16)\\=(5p-4)(5p-4)-4(5p-4)\\=(5p-8)(5p-4)\)
- \((9a-2)^2-(18a-4)\\=(9a-2)(9a-2)-2(9a-2)\\=(9a-4)(9a-2)\)
- \((6x+5)^2+(12x+10)\\=(6x+5)(6x+5)+2(6x+5)\\=(6x+7)(6x+5)\)
- \((p-6)(p-9)-(4p-7)(p-6)\\=(p-6)(p-9-4p+7)\\=(p-6)(-3p-2)\)
- \((3y+8)(y+2)-(3y+8)(4y-9)\\=(3y+8)(y+2-4y+9)\\=(3y+8)(-3y+11)\)
- \((8q+8)(q-2)-(8q+8)(3q-1)\\=(8q+8)(q-2-3q+1)\\=(8q+8)(-2q-1)\)
- \((7x+6)(x+9)+(7x+6)(3x+3)\\=(7x+6)(x+9+3x+3)\\=(7x+6)(4x+12)\)
- \((4y+5)^2-(16y+20)\\=(4y+5)(4y+5)-4(4y+5)\\=(4y+1)(4y+5)\)
- \((7q-7)(q+2)+(7q-7)(3q-6)\\=(7q-7)(q+2+3q-6)\\=(7q-7)(4q-4)\)
- \((q-8)(q+3)-(5q-2)(q-8)\\=(q-8)(q+3-5q+2)\\=(q-8)(-4q+5)\)
- \((2x+3)^2+(10x+15)\\=(2x+3)(2x+3)+5(2x+3)\\=(2x+8)(2x+3)\)
- \((2b+1)^2+(10b+5)\\=(2b+1)(2b+1)+5(2b+1)\\=(2b+6)(2b+1)\)