Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((s-3)(s+1)-(2s+7)(s-3)\)
2. \((7s+6)(s-9)+(7s+6)(2s-9)\)
3. \((4p-3)^2+(8p-6)\)
4. \((7a-4)(a+3)+(7a-4)(2a+6)\)
5. \((6x-5)^2-(12x-10)\)
6. \((y+8)(y+1)+(5y-1)(y+8)\)
7. \((3q+8)(q-1)+(3q+8)(5q-2)\)
8. \((2p+1)^2+(4p+2)\)
9. \((q+8)^2-(2q+16)\)
10. \((4b+3)(b+7)+(4b+3)(3b+9)\)
11. \((9b-4)^2+(36b-16)\)
12. \((7q+3)(q-4)-(7q+3)(2q-8)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((s-3)(s+1)-(2s+7)(s-3)\\=(s-3)(s+1-2s-7)\\=(s-3)(-s-6)\)
2. \((7s+6)(s-9)+(7s+6)(2s-9)\\=(7s+6)(s-9+2s-9)\\=(7s+6)(3s-18)\)
3. \((4p-3)^2+(8p-6)\\=(4p-3)(4p-3)+2(4p-3)\\=(4p-1)(4p-3)\)
4. \((7a-4)(a+3)+(7a-4)(2a+6)\\=(7a-4)(a+3+2a+6)\\=(7a-4)(3a+9)\)
5. \((6x-5)^2-(12x-10)\\=(6x-5)(6x-5)-2(6x-5)\\=(6x-7)(6x-5)\)
6. \((y+8)(y+1)+(5y-1)(y+8)\\=(y+8)(y+1+5y-1)\\=(y+8)(6y+0)\)
7. \((3q+8)(q-1)+(3q+8)(5q-2)\\=(3q+8)(q-1+5q-2)\\=(3q+8)(6q-3)\)
8. \((2p+1)^2+(4p+2)\\=(2p+1)(2p+1)+2(2p+1)\\=(2p+3)(2p+1)\)
9. \((q+8)^2-(2q+16)\\=(q+8)(q+8)-2(q+8)\\=(q+6)(q+8)\)
10. \((4b+3)(b+7)+(4b+3)(3b+9)\\=(4b+3)(b+7+3b+9)\\=(4b+3)(4b+16)\)
11. \((9b-4)^2+(36b-16)\\=(9b-4)(9b-4)+4(9b-4)\\=(9b+0)(9b-4)\)
12. \((7q+3)(q-4)-(7q+3)(2q-8)\\=(7q+3)(q-4-2q+8)\\=(7q+3)(-q+4)\)