Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((y-3)(y-4)-(2y-8)(y-3)\)
2. \((y-6)(y-5)+(3y-6)(y-6)\)
3. \((4a+3)^2+(12a+9)\)
4. \((3s-4)(s-3)+(3s-4)(2s-6)\)
5. \((4a+7)^2-(20a+35)\)
6. \((7a-8)(a+8)-(7a-8)(2a+9)\)
7. \((s+9)(s+2)+(2s+5)(s+9)\)
8. \((s+6)(s+3)-(5s+8)(s+6)\)
9. \((4a+5)(a+3)+(4a+5)(5a-6)\)
10. \((7b+7)(b-9)-(7b+7)(4b-1)\)
11. \((p-9)(p+2)+(4p+8)(p-9)\)
12. \((5b+5)(b+5)-(5b+5)(2b+7)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((y-3)(y-4)-(2y-8)(y-3)\\=(y-3)(y-4-2y+8)\\=(y-3)(-y+4)\)
2. \((y-6)(y-5)+(3y-6)(y-6)\\=(y-6)(y-5+3y-6)\\=(y-6)(4y-11)\)
3. \((4a+3)^2+(12a+9)\\=(4a+3)(4a+3)+3(4a+3)\\=(4a+6)(4a+3)\)
4. \((3s-4)(s-3)+(3s-4)(2s-6)\\=(3s-4)(s-3+2s-6)\\=(3s-4)(3s-9)\)
5. \((4a+7)^2-(20a+35)\\=(4a+7)(4a+7)-5(4a+7)\\=(4a+2)(4a+7)\)
6. \((7a-8)(a+8)-(7a-8)(2a+9)\\=(7a-8)(a+8-2a-9)\\=(7a-8)(-a-1)\)
7. \((s+9)(s+2)+(2s+5)(s+9)\\=(s+9)(s+2+2s+5)\\=(s+9)(3s+7)\)
8. \((s+6)(s+3)-(5s+8)(s+6)\\=(s+6)(s+3-5s-8)\\=(s+6)(-4s-5)\)
9. \((4a+5)(a+3)+(4a+5)(5a-6)\\=(4a+5)(a+3+5a-6)\\=(4a+5)(6a-3)\)
10. \((7b+7)(b-9)-(7b+7)(4b-1)\\=(7b+7)(b-9-4b+1)\\=(7b+7)(-3b-8)\)
11. \((p-9)(p+2)+(4p+8)(p-9)\\=(p-9)(p+2+4p+8)\\=(p-9)(5p+10)\)
12. \((5b+5)(b+5)-(5b+5)(2b+7)\\=(5b+5)(b+5-2b-7)\\=(5b+5)(-b-2)\)