Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((7s+4)(s-4)+(7s+4)(4s+6)\)
2. \((6s-5)^2+(24s-20)\)
3. \((5p-3)(p-3)-(5p-3)(3p+4)\)
4. \((4b-1)(b-9)-(4b-1)(3b-2)\)
5. \((q-5)(q-1)+(5q+7)(q-5)\)
6. \((q+6)(q-3)+(5q+1)(q+6)\)
7. \((5x+3)(x-1)-(5x+3)(2x-7)\)
8. \((y+1)(y-7)-(4y-8)(y+1)\)
9. \((s+1)(s+6)+(3s-6)(s+1)\)
10. \((a-9)(a+1)+(5a-3)(a-9)\)
11. \((5a-9)^2+(20a-36)\)
12. \((2y+1)(y-4)-(2y+1)(3y-1)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((7s+4)(s-4)+(7s+4)(4s+6)\\=(7s+4)(s-4+4s+6)\\=(7s+4)(5s+2)\)
2. \((6s-5)^2+(24s-20)\\=(6s-5)(6s-5)+4(6s-5)\\=(6s-1)(6s-5)\)
3. \((5p-3)(p-3)-(5p-3)(3p+4)\\=(5p-3)(p-3-3p-4)\\=(5p-3)(-2p-7)\)
4. \((4b-1)(b-9)-(4b-1)(3b-2)\\=(4b-1)(b-9-3b+2)\\=(4b-1)(-2b-7)\)
5. \((q-5)(q-1)+(5q+7)(q-5)\\=(q-5)(q-1+5q+7)\\=(q-5)(6q+6)\)
6. \((q+6)(q-3)+(5q+1)(q+6)\\=(q+6)(q-3+5q+1)\\=(q+6)(6q-2)\)
7. \((5x+3)(x-1)-(5x+3)(2x-7)\\=(5x+3)(x-1-2x+7)\\=(5x+3)(-x+6)\)
8. \((y+1)(y-7)-(4y-8)(y+1)\\=(y+1)(y-7-4y+8)\\=(y+1)(-3y+1)\)
9. \((s+1)(s+6)+(3s-6)(s+1)\\=(s+1)(s+6+3s-6)\\=(s+1)(4s+0)\)
10. \((a-9)(a+1)+(5a-3)(a-9)\\=(a-9)(a+1+5a-3)\\=(a-9)(6a-2)\)
11. \((5a-9)^2+(20a-36)\\=(5a-9)(5a-9)+4(5a-9)\\=(5a-5)(5a-9)\)
12. \((2y+1)(y-4)-(2y+1)(3y-1)\\=(2y+1)(y-4-3y+1)\\=(2y+1)(-2y-3)\)