Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((4p+3)^2-(20p+15)\)
2. \((5y-9)(y-1)-(5y-9)(3y-8)\)
3. \((3b+6)(b+8)-(3b+6)(5b-7)\)
4. \((x-1)(x-8)-(2x+3)(x-1)\)
5. \((7s+9)^2+(14s+18)\)
6. \((a+4)(a-5)+(5a+8)(a+4)\)
7. \((8b+5)^2+(32b+20)\)
8. \((3b+1)^2+(12b+4)\)
9. \((p+9)(p-1)-(4p-9)(p+9)\)
10. \((9p-8)(p-3)-(9p-8)(2p-3)\)
11. \((q-8)(q-3)-(5q-2)(q-8)\)
12. \((9s-3)(s+9)+(9s-3)(5s+2)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((4p+3)^2-(20p+15)\\=(4p+3)(4p+3)-5(4p+3)\\=(4p-2)(4p+3)\)
2. \((5y-9)(y-1)-(5y-9)(3y-8)\\=(5y-9)(y-1-3y+8)\\=(5y-9)(-2y+7)\)
3. \((3b+6)(b+8)-(3b+6)(5b-7)\\=(3b+6)(b+8-5b+7)\\=(3b+6)(-4b+15)\)
4. \((x-1)(x-8)-(2x+3)(x-1)\\=(x-1)(x-8-2x-3)\\=(x-1)(-x-11)\)
5. \((7s+9)^2+(14s+18)\\=(7s+9)(7s+9)+2(7s+9)\\=(7s+11)(7s+9)\)
6. \((a+4)(a-5)+(5a+8)(a+4)\\=(a+4)(a-5+5a+8)\\=(a+4)(6a+3)\)
7. \((8b+5)^2+(32b+20)\\=(8b+5)(8b+5)+4(8b+5)\\=(8b+9)(8b+5)\)
8. \((3b+1)^2+(12b+4)\\=(3b+1)(3b+1)+4(3b+1)\\=(3b+5)(3b+1)\)
9. \((p+9)(p-1)-(4p-9)(p+9)\\=(p+9)(p-1-4p+9)\\=(p+9)(-3p+8)\)
10. \((9p-8)(p-3)-(9p-8)(2p-3)\\=(9p-8)(p-3-2p+3)\\=(9p-8)(-p+0)\)
11. \((q-8)(q-3)-(5q-2)(q-8)\\=(q-8)(q-3-5q+2)\\=(q-8)(-4q-1)\)
12. \((9s-3)(s+9)+(9s-3)(5s+2)\\=(9s-3)(s+9+5s+2)\\=(9s-3)(6s+11)\)