Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

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

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

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