Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((s+3)(s-7)-(4s-1)(s+3)\)
2. \((3q+8)(q+7)+(3q+8)(2q-3)\)
3. \((8y-7)^2+(40y-35)\)
4. \((8p+5)^2+(16p+10)\)
5. \((s-6)(s-2)-(3s+2)(s-6)\)
6. \((7b-7)(b-4)-(7b-7)(2b-3)\)
7. \((3s-1)(s+4)+(3s-1)(4s-4)\)
8. \((7a-6)^2-(21a-18)\)
9. \((b+8)(b+4)+(4b-3)(b+8)\)
10. \((3a-5)^2+(6a-10)\)
11. \((y+5)(y-4)+(4y+6)(y+5)\)
12. \((4p+3)(p-7)-(4p+3)(3p+6)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((s+3)(s-7)-(4s-1)(s+3)\\=(s+3)(s-7-4s+1)\\=(s+3)(-3s-6)\)
2. \((3q+8)(q+7)+(3q+8)(2q-3)\\=(3q+8)(q+7+2q-3)\\=(3q+8)(3q+4)\)
3. \((8y-7)^2+(40y-35)\\=(8y-7)(8y-7)+5(8y-7)\\=(8y-2)(8y-7)\)
4. \((8p+5)^2+(16p+10)\\=(8p+5)(8p+5)+2(8p+5)\\=(8p+7)(8p+5)\)
5. \((s-6)(s-2)-(3s+2)(s-6)\\=(s-6)(s-2-3s-2)\\=(s-6)(-2s-4)\)
6. \((7b-7)(b-4)-(7b-7)(2b-3)\\=(7b-7)(b-4-2b+3)\\=(7b-7)(-b-1)\)
7. \((3s-1)(s+4)+(3s-1)(4s-4)\\=(3s-1)(s+4+4s-4)\\=(3s-1)(5s+0)\)
8. \((7a-6)^2-(21a-18)\\=(7a-6)(7a-6)-3(7a-6)\\=(7a-9)(7a-6)\)
9. \((b+8)(b+4)+(4b-3)(b+8)\\=(b+8)(b+4+4b-3)\\=(b+8)(5b+1)\)
10. \((3a-5)^2+(6a-10)\\=(3a-5)(3a-5)+2(3a-5)\\=(3a-3)(3a-5)\)
11. \((y+5)(y-4)+(4y+6)(y+5)\\=(y+5)(y-4+4y+6)\\=(y+5)(5y+2)\)
12. \((4p+3)(p-7)-(4p+3)(3p+6)\\=(4p+3)(p-7-3p-6)\\=(4p+3)(-2p-13)\)