Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((s+6)(s-8)+(5s-3)(s+6)\)
2. \((9a+4)^2-(27a+12)\)
3. \((3q-5)(q+5)+(3q-5)(2q+3)\)
4. \((8a+7)^2+(16a+14)\)
5. \((b-8)(b+3)+(5b+1)(b-8)\)
6. \((7s+3)^2+(21s+9)\)
7. \((5s-5)(s-7)+(5s-5)(2s+2)\)
8. \((3s+9)(s+2)-(3s+9)(4s+2)\)
9. \((x-5)(x+9)+(2x+1)(x-5)\)
10. \((8p-6)(p-2)+(8p-6)(5p-7)\)
11. \((b+7)(b+6)+(4b+8)(b+7)\)
12. \((y+7)^2-(5y+35)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((s+6)(s-8)+(5s-3)(s+6)\\=(s+6)(s-8+5s-3)\\=(s+6)(6s-11)\)
2. \((9a+4)^2-(27a+12)\\=(9a+4)(9a+4)-3(9a+4)\\=(9a+1)(9a+4)\)
3. \((3q-5)(q+5)+(3q-5)(2q+3)\\=(3q-5)(q+5+2q+3)\\=(3q-5)(3q+8)\)
4. \((8a+7)^2+(16a+14)\\=(8a+7)(8a+7)+2(8a+7)\\=(8a+9)(8a+7)\)
5. \((b-8)(b+3)+(5b+1)(b-8)\\=(b-8)(b+3+5b+1)\\=(b-8)(6b+4)\)
6. \((7s+3)^2+(21s+9)\\=(7s+3)(7s+3)+3(7s+3)\\=(7s+6)(7s+3)\)
7. \((5s-5)(s-7)+(5s-5)(2s+2)\\=(5s-5)(s-7+2s+2)\\=(5s-5)(3s-5)\)
8. \((3s+9)(s+2)-(3s+9)(4s+2)\\=(3s+9)(s+2-4s-2)\\=(3s+9)(-3s+0)\)
9. \((x-5)(x+9)+(2x+1)(x-5)\\=(x-5)(x+9+2x+1)\\=(x-5)(3x+10)\)
10. \((8p-6)(p-2)+(8p-6)(5p-7)\\=(8p-6)(p-2+5p-7)\\=(8p-6)(6p-9)\)
11. \((b+7)(b+6)+(4b+8)(b+7)\\=(b+7)(b+6+4b+8)\\=(b+7)(5b+14)\)
12. \((y+7)^2-(5y+35)\\=(y+7)(y+7)-5(y+7)\\=(y+2)(y+7)\)