Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((b+2)(b-5)-(4b-9)(b+2)\)
2. \((a+9)(a-3)+(3a+6)(a+9)\)
3. \((3y+4)(y-1)+(3y+4)(2y-5)\)
4. \((7s-9)(s-1)+(7s-9)(4s-5)\)
5. \((5y+6)(y-3)+(5y+6)(2y-1)\)
6. \((s+7)(s-1)-(2s-4)(s+7)\)
7. \((8p-3)(p-4)-(8p-3)(5p-4)\)
8. \((x+4)(x-9)-(4x-5)(x+4)\)
9. \((9a+4)^2+(27a+12)\)
10. \((3x+3)(x-1)+(3x+3)(2x-6)\)
11. \((8a+1)^2+(32a+4)\)
12. \((8x+6)(x-6)-(8x+6)(3x-2)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((b+2)(b-5)-(4b-9)(b+2)\\=(b+2)(b-5-4b+9)\\=(b+2)(-3b+4)\)
2. \((a+9)(a-3)+(3a+6)(a+9)\\=(a+9)(a-3+3a+6)\\=(a+9)(4a+3)\)
3. \((3y+4)(y-1)+(3y+4)(2y-5)\\=(3y+4)(y-1+2y-5)\\=(3y+4)(3y-6)\)
4. \((7s-9)(s-1)+(7s-9)(4s-5)\\=(7s-9)(s-1+4s-5)\\=(7s-9)(5s-6)\)
5. \((5y+6)(y-3)+(5y+6)(2y-1)\\=(5y+6)(y-3+2y-1)\\=(5y+6)(3y-4)\)
6. \((s+7)(s-1)-(2s-4)(s+7)\\=(s+7)(s-1-2s+4)\\=(s+7)(-s+3)\)
7. \((8p-3)(p-4)-(8p-3)(5p-4)\\=(8p-3)(p-4-5p+4)\\=(8p-3)(-4p+0)\)
8. \((x+4)(x-9)-(4x-5)(x+4)\\=(x+4)(x-9-4x+5)\\=(x+4)(-3x-4)\)
9. \((9a+4)^2+(27a+12)\\=(9a+4)(9a+4)+3(9a+4)\\=(9a+7)(9a+4)\)
10. \((3x+3)(x-1)+(3x+3)(2x-6)\\=(3x+3)(x-1+2x-6)\\=(3x+3)(3x-7)\)
11. \((8a+1)^2+(32a+4)\\=(8a+1)(8a+1)+4(8a+1)\\=(8a+5)(8a+1)\)
12. \((8x+6)(x-6)-(8x+6)(3x-2)\\=(8x+6)(x-6-3x+2)\\=(8x+6)(-2x-4)\)