Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((s+7)(s+9)+(3s-3)(s+7)\)
2. \((4a+1)^2+(8a+2)\)
3. \((y-6)(y-4)+(3y+7)(y-6)\)
4. \((s+9)(s-9)+(4s+6)(s+9)\)
5. \((a+3)^2-(2a+6)\)
6. \((s+9)(s-2)+(4s+3)(s+9)\)
7. \((5b-9)(b-3)+(5b-9)(4b+8)\)
8. \((y-1)(y-4)+(2y-2)(y-1)\)
9. \((7q+5)^2+(28q+20)\)
10. \((y-5)(y-2)+(2y-1)(y-5)\)
11. \((y-5)(y-4)-(2y-3)(y-5)\)
12. \((b-3)(b-3)-(3b+5)(b-3)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((s+7)(s+9)+(3s-3)(s+7)\\=(s+7)(s+9+3s-3)\\=(s+7)(4s+6)\)
2. \((4a+1)^2+(8a+2)\\=(4a+1)(4a+1)+2(4a+1)\\=(4a+3)(4a+1)\)
3. \((y-6)(y-4)+(3y+7)(y-6)\\=(y-6)(y-4+3y+7)\\=(y-6)(4y+3)\)
4. \((s+9)(s-9)+(4s+6)(s+9)\\=(s+9)(s-9+4s+6)\\=(s+9)(5s-3)\)
5. \((a+3)^2-(2a+6)\\=(a+3)(a+3)-2(a+3)\\=(a+1)(a+3)\)
6. \((s+9)(s-2)+(4s+3)(s+9)\\=(s+9)(s-2+4s+3)\\=(s+9)(5s+1)\)
7. \((5b-9)(b-3)+(5b-9)(4b+8)\\=(5b-9)(b-3+4b+8)\\=(5b-9)(5b+5)\)
8. \((y-1)(y-4)+(2y-2)(y-1)\\=(y-1)(y-4+2y-2)\\=(y-1)(3y-6)\)
9. \((7q+5)^2+(28q+20)\\=(7q+5)(7q+5)+4(7q+5)\\=(7q+9)(7q+5)\)
10. \((y-5)(y-2)+(2y-1)(y-5)\\=(y-5)(y-2+2y-1)\\=(y-5)(3y-3)\)
11. \((y-5)(y-4)-(2y-3)(y-5)\\=(y-5)(y-4-2y+3)\\=(y-5)(-y-1)\)
12. \((b-3)(b-3)-(3b+5)(b-3)\\=(b-3)(b-3-3b-5)\\=(b-3)(-2b-8)\)