Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((7x-6)^2+(28x-24)\)
2. \((3a+5)(a-7)-(3a+5)(4a+4)\)
3. \((3x+3)(x+3)-(3x+3)(2x-9)\)
4. \((9b+7)^2+(45b+35)\)
5. \((s-1)(s-5)+(3s+5)(s-1)\)
6. \((a-4)(a+4)+(4a-6)(a-4)\)
7. \((4p+3)^2+(8p+6)\)
8. \((3p+7)^2-(6p+14)\)
9. \((9a-4)^2+(36a-16)\)
10. \((5b+5)(b+6)+(5b+5)(4b-8)\)
11. \((8s+1)^2+(16s+2)\)
12. \((2p+1)^2-(8p+4)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((7x-6)^2+(28x-24)\\=(7x-6)(7x-6)+4(7x-6)\\=(7x-2)(7x-6)\)
2. \((3a+5)(a-7)-(3a+5)(4a+4)\\=(3a+5)(a-7-4a-4)\\=(3a+5)(-3a-11)\)
3. \((3x+3)(x+3)-(3x+3)(2x-9)\\=(3x+3)(x+3-2x+9)\\=(3x+3)(-x+12)\)
4. \((9b+7)^2+(45b+35)\\=(9b+7)(9b+7)+5(9b+7)\\=(9b+12)(9b+7)\)
5. \((s-1)(s-5)+(3s+5)(s-1)\\=(s-1)(s-5+3s+5)\\=(s-1)(4s+0)\)
6. \((a-4)(a+4)+(4a-6)(a-4)\\=(a-4)(a+4+4a-6)\\=(a-4)(5a-2)\)
7. \((4p+3)^2+(8p+6)\\=(4p+3)(4p+3)+2(4p+3)\\=(4p+5)(4p+3)\)
8. \((3p+7)^2-(6p+14)\\=(3p+7)(3p+7)-2(3p+7)\\=(3p+5)(3p+7)\)
9. \((9a-4)^2+(36a-16)\\=(9a-4)(9a-4)+4(9a-4)\\=(9a+0)(9a-4)\)
10. \((5b+5)(b+6)+(5b+5)(4b-8)\\=(5b+5)(b+6+4b-8)\\=(5b+5)(5b-2)\)
11. \((8s+1)^2+(16s+2)\\=(8s+1)(8s+1)+2(8s+1)\\=(8s+3)(8s+1)\)
12. \((2p+1)^2-(8p+4)\\=(2p+1)(2p+1)-4(2p+1)\\=(2p-3)(2p+1)\)