Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((7p-9)^2-(35p-45)\)
2. \((4s-4)(s+8)+(4s-4)(3s+8)\)
3. \((8q+1)^2-(24q+3)\)
4. \((s-4)(s+6)+(4s+4)(s-4)\)
5. \((8q-7)^2-(32q-28)\)
6. \((s-2)(s-2)+(3s+6)(s-2)\)
7. \((2x-5)(x-2)-(2x-5)(3x-3)\)
8. \((3b+8)(b+9)-(3b+8)(5b+7)\)
9. \((7p-6)(p-9)+(7p-6)(4p+4)\)
10. \((q-3)(q-5)-(4q+2)(q-3)\)
11. \((7b-6)^2-(35b-30)\)
12. \((y+3)(y-3)-(2y+1)(y+3)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((7p-9)^2-(35p-45)\\=(7p-9)(7p-9)-5(7p-9)\\=(7p-14)(7p-9)\)
2. \((4s-4)(s+8)+(4s-4)(3s+8)\\=(4s-4)(s+8+3s+8)\\=(4s-4)(4s+16)\)
3. \((8q+1)^2-(24q+3)\\=(8q+1)(8q+1)-3(8q+1)\\=(8q-2)(8q+1)\)
4. \((s-4)(s+6)+(4s+4)(s-4)\\=(s-4)(s+6+4s+4)\\=(s-4)(5s+10)\)
5. \((8q-7)^2-(32q-28)\\=(8q-7)(8q-7)-4(8q-7)\\=(8q-11)(8q-7)\)
6. \((s-2)(s-2)+(3s+6)(s-2)\\=(s-2)(s-2+3s+6)\\=(s-2)(4s+4)\)
7. \((2x-5)(x-2)-(2x-5)(3x-3)\\=(2x-5)(x-2-3x+3)\\=(2x-5)(-2x+1)\)
8. \((3b+8)(b+9)-(3b+8)(5b+7)\\=(3b+8)(b+9-5b-7)\\=(3b+8)(-4b+2)\)
9. \((7p-6)(p-9)+(7p-6)(4p+4)\\=(7p-6)(p-9+4p+4)\\=(7p-6)(5p-5)\)
10. \((q-3)(q-5)-(4q+2)(q-3)\\=(q-3)(q-5-4q-2)\\=(q-3)(-3q-7)\)
11. \((7b-6)^2-(35b-30)\\=(7b-6)(7b-6)-5(7b-6)\\=(7b-11)(7b-6)\)
12. \((y+3)(y-3)-(2y+1)(y+3)\\=(y+3)(y-3-2y-1)\\=(y+3)(-y-4)\)