Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((a-6)(a+3)-(2a+8)(a-6)\)
2. \((q+9)(q-5)+(3q+3)(q+9)\)
3. \((3x-2)(x+3)-(3x-2)(2x+1)\)
4. \((8s-7)(s+3)-(8s-7)(3s-3)\)
5. \((y+6)(y+1)+(4y+7)(y+6)\)
6. \((7y+1)^2-(28y+4)\)
7. \((4s+3)(s+5)-(4s+3)(5s+1)\)
8. \((y-6)(y-6)-(3y-2)(y-6)\)
9. \((9b+2)^2-(27b+6)\)
10. \((7y+7)(y-1)-(7y+7)(2y-3)\)
11. \((7y+1)(y-9)+(7y+1)(3y+7)\)
12. \((8p+5)^2+(16p+10)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((a-6)(a+3)-(2a+8)(a-6)\\=(a-6)(a+3-2a-8)\\=(a-6)(-a-5)\)
2. \((q+9)(q-5)+(3q+3)(q+9)\\=(q+9)(q-5+3q+3)\\=(q+9)(4q-2)\)
3. \((3x-2)(x+3)-(3x-2)(2x+1)\\=(3x-2)(x+3-2x-1)\\=(3x-2)(-x+2)\)
4. \((8s-7)(s+3)-(8s-7)(3s-3)\\=(8s-7)(s+3-3s+3)\\=(8s-7)(-2s+6)\)
5. \((y+6)(y+1)+(4y+7)(y+6)\\=(y+6)(y+1+4y+7)\\=(y+6)(5y+8)\)
6. \((7y+1)^2-(28y+4)\\=(7y+1)(7y+1)-4(7y+1)\\=(7y-3)(7y+1)\)
7. \((4s+3)(s+5)-(4s+3)(5s+1)\\=(4s+3)(s+5-5s-1)\\=(4s+3)(-4s+4)\)
8. \((y-6)(y-6)-(3y-2)(y-6)\\=(y-6)(y-6-3y+2)\\=(y-6)(-2y-4)\)
9. \((9b+2)^2-(27b+6)\\=(9b+2)(9b+2)-3(9b+2)\\=(9b-1)(9b+2)\)
10. \((7y+7)(y-1)-(7y+7)(2y-3)\\=(7y+7)(y-1-2y+3)\\=(7y+7)(-y+2)\)
11. \((7y+1)(y-9)+(7y+1)(3y+7)\\=(7y+1)(y-9+3y+7)\\=(7y+1)(4y-2)\)
12. \((8p+5)^2+(16p+10)\\=(8p+5)(8p+5)+2(8p+5)\\=(8p+7)(8p+5)\)