Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((a-3)(a-9)-(2a-2)(a-3)\)
2. \((2s-9)(s+6)+(2s-9)(3s-8)\)
3. \((x+3)(x+5)+(2x+8)(x+3)\)
4. \((3s+4)(s-6)+(3s+4)(2s+6)\)
5. \((s-3)(s+2)-(5s-8)(s-3)\)
6. \((6q-5)(q-3)+(6q-5)(5q-9)\)
7. \((5a+1)(a+7)-(5a+1)(4a-5)\)
8. \((b+2)(b-4)+(3b-3)(b+2)\)
9. \((5a+7)(a-5)+(5a+7)(2a-5)\)
10. \((8s+1)^2+(40s+5)\)
11. \((4s+1)(s-1)-(4s+1)(3s-4)\)
12. \((5x-9)^2+(25x-45)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((a-3)(a-9)-(2a-2)(a-3)\\=(a-3)(a-9-2a+2)\\=(a-3)(-a-7)\)
2. \((2s-9)(s+6)+(2s-9)(3s-8)\\=(2s-9)(s+6+3s-8)\\=(2s-9)(4s-2)\)
3. \((x+3)(x+5)+(2x+8)(x+3)\\=(x+3)(x+5+2x+8)\\=(x+3)(3x+13)\)
4. \((3s+4)(s-6)+(3s+4)(2s+6)\\=(3s+4)(s-6+2s+6)\\=(3s+4)(3s+0)\)
5. \((s-3)(s+2)-(5s-8)(s-3)\\=(s-3)(s+2-5s+8)\\=(s-3)(-4s+10)\)
6. \((6q-5)(q-3)+(6q-5)(5q-9)\\=(6q-5)(q-3+5q-9)\\=(6q-5)(6q-12)\)
7. \((5a+1)(a+7)-(5a+1)(4a-5)\\=(5a+1)(a+7-4a+5)\\=(5a+1)(-3a+12)\)
8. \((b+2)(b-4)+(3b-3)(b+2)\\=(b+2)(b-4+3b-3)\\=(b+2)(4b-7)\)
9. \((5a+7)(a-5)+(5a+7)(2a-5)\\=(5a+7)(a-5+2a-5)\\=(5a+7)(3a-10)\)
10. \((8s+1)^2+(40s+5)\\=(8s+1)(8s+1)+5(8s+1)\\=(8s+6)(8s+1)\)
11. \((4s+1)(s-1)-(4s+1)(3s-4)\\=(4s+1)(s-1-3s+4)\\=(4s+1)(-2s+3)\)
12. \((5x-9)^2+(25x-45)\\=(5x-9)(5x-9)+5(5x-9)\\=(5x-4)(5x-9)\)