Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((7b-9)(b+3)-(7b-9)(3b+6)\)
2. \((7p-5)(p+7)-(7p-5)(2p+5)\)
3. \((s+8)(s-7)-(4s-3)(s+8)\)
4. \((4s+6)(s-9)+(4s+6)(5s-4)\)
5. \((s+7)(s-6)+(5s-7)(s+7)\)
6. \((8x-1)(x+4)-(8x-1)(3x+2)\)
7. \((7y+8)^2-(35y+40)\)
8. \((y-7)^2+(5y-35)\)
9. \((7s+3)(s-3)+(7s+3)(5s-7)\)
10. \((8p+7)^2+(16p+14)\)
11. \((4p-8)(p+3)+(4p-8)(5p-4)\)
12. \((5s-9)(s+7)+(5s-9)(2s+4)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((7b-9)(b+3)-(7b-9)(3b+6)\\=(7b-9)(b+3-3b-6)\\=(7b-9)(-2b-3)\)
2. \((7p-5)(p+7)-(7p-5)(2p+5)\\=(7p-5)(p+7-2p-5)\\=(7p-5)(-p+2)\)
3. \((s+8)(s-7)-(4s-3)(s+8)\\=(s+8)(s-7-4s+3)\\=(s+8)(-3s-4)\)
4. \((4s+6)(s-9)+(4s+6)(5s-4)\\=(4s+6)(s-9+5s-4)\\=(4s+6)(6s-13)\)
5. \((s+7)(s-6)+(5s-7)(s+7)\\=(s+7)(s-6+5s-7)\\=(s+7)(6s-13)\)
6. \((8x-1)(x+4)-(8x-1)(3x+2)\\=(8x-1)(x+4-3x-2)\\=(8x-1)(-2x+2)\)
7. \((7y+8)^2-(35y+40)\\=(7y+8)(7y+8)-5(7y+8)\\=(7y+3)(7y+8)\)
8. \((y-7)^2+(5y-35)\\=(y-7)(y-7)+5(y-7)\\=(y-2)(y-7)\)
9. \((7s+3)(s-3)+(7s+3)(5s-7)\\=(7s+3)(s-3+5s-7)\\=(7s+3)(6s-10)\)
10. \((8p+7)^2+(16p+14)\\=(8p+7)(8p+7)+2(8p+7)\\=(8p+9)(8p+7)\)
11. \((4p-8)(p+3)+(4p-8)(5p-4)\\=(4p-8)(p+3+5p-4)\\=(4p-8)(6p-1)\)
12. \((5s-9)(s+7)+(5s-9)(2s+4)\\=(5s-9)(s+7+2s+4)\\=(5s-9)(3s+11)\)