Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((4s-7)^2-(20s-35)\)
2. \((6y+1)(y-9)+(6y+1)(5y-1)\)
3. \((2b-9)(b+4)-(2b-9)(5b-4)\)
4. \((3x-3)(x-9)+(3x-3)(4x-7)\)
5. \((3y+8)(y+5)+(3y+8)(2y-5)\)
6. \((6q+8)(q+3)-(6q+8)(5q-6)\)
7. \((b+4)(b-5)-(5b+5)(b+4)\)
8. \((4a-3)(a-5)-(4a-3)(3a-7)\)
9. \((6a-5)^2+(24a-20)\)
10. \((3x-2)(x+3)+(3x-2)(4x+5)\)
11. \((y+8)(y-1)-(2y+1)(y+8)\)
12. \((2b+6)(b+7)+(2b+6)(3b-6)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((4s-7)^2-(20s-35)\\=(4s-7)(4s-7)-5(4s-7)\\=(4s-12)(4s-7)\)
2. \((6y+1)(y-9)+(6y+1)(5y-1)\\=(6y+1)(y-9+5y-1)\\=(6y+1)(6y-10)\)
3. \((2b-9)(b+4)-(2b-9)(5b-4)\\=(2b-9)(b+4-5b+4)\\=(2b-9)(-4b+8)\)
4. \((3x-3)(x-9)+(3x-3)(4x-7)\\=(3x-3)(x-9+4x-7)\\=(3x-3)(5x-16)\)
5. \((3y+8)(y+5)+(3y+8)(2y-5)\\=(3y+8)(y+5+2y-5)\\=(3y+8)(3y+0)\)
6. \((6q+8)(q+3)-(6q+8)(5q-6)\\=(6q+8)(q+3-5q+6)\\=(6q+8)(-4q+9)\)
7. \((b+4)(b-5)-(5b+5)(b+4)\\=(b+4)(b-5-5b-5)\\=(b+4)(-4b-10)\)
8. \((4a-3)(a-5)-(4a-3)(3a-7)\\=(4a-3)(a-5-3a+7)\\=(4a-3)(-2a+2)\)
9. \((6a-5)^2+(24a-20)\\=(6a-5)(6a-5)+4(6a-5)\\=(6a-1)(6a-5)\)
10. \((3x-2)(x+3)+(3x-2)(4x+5)\\=(3x-2)(x+3+4x+5)\\=(3x-2)(5x+8)\)
11. \((y+8)(y-1)-(2y+1)(y+8)\\=(y+8)(y-1-2y-1)\\=(y+8)(-y-2)\)
12. \((2b+6)(b+7)+(2b+6)(3b-6)\\=(2b+6)(b+7+3b-6)\\=(2b+6)(4b+1)\)