Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((a-7)(a+1)+(2a-3)(a-7)\)
2. \((5p+9)(p-4)-(5p+9)(2p-3)\)
3. \((a+8)(a-2)+(5a+4)(a+8)\)
4. \((8q+1)^2+(16q+2)\)
5. \((8s-7)^2+(24s-21)\)
6. \((s-9)(s-6)+(2s-6)(s-9)\)
7. \((b+9)(b+6)-(4b-4)(b+9)\)
8. \((7s+9)(s-7)-(7s+9)(2s+8)\)
9. \((4q-9)(q-4)-(4q-9)(3q-7)\)
10. \((p+9)(p-7)+(2p+4)(p+9)\)
11. \((9s+1)^2+(45s+5)\)
12. \((q+2)(q-1)-(4q+5)(q+2)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((a-7)(a+1)+(2a-3)(a-7)\\=(a-7)(a+1+2a-3)\\=(a-7)(3a-2)\)
2. \((5p+9)(p-4)-(5p+9)(2p-3)\\=(5p+9)(p-4-2p+3)\\=(5p+9)(-p-1)\)
3. \((a+8)(a-2)+(5a+4)(a+8)\\=(a+8)(a-2+5a+4)\\=(a+8)(6a+2)\)
4. \((8q+1)^2+(16q+2)\\=(8q+1)(8q+1)+2(8q+1)\\=(8q+3)(8q+1)\)
5. \((8s-7)^2+(24s-21)\\=(8s-7)(8s-7)+3(8s-7)\\=(8s-4)(8s-7)\)
6. \((s-9)(s-6)+(2s-6)(s-9)\\=(s-9)(s-6+2s-6)\\=(s-9)(3s-12)\)
7. \((b+9)(b+6)-(4b-4)(b+9)\\=(b+9)(b+6-4b+4)\\=(b+9)(-3b+10)\)
8. \((7s+9)(s-7)-(7s+9)(2s+8)\\=(7s+9)(s-7-2s-8)\\=(7s+9)(-s-15)\)
9. \((4q-9)(q-4)-(4q-9)(3q-7)\\=(4q-9)(q-4-3q+7)\\=(4q-9)(-2q+3)\)
10. \((p+9)(p-7)+(2p+4)(p+9)\\=(p+9)(p-7+2p+4)\\=(p+9)(3p-3)\)
11. \((9s+1)^2+(45s+5)\\=(9s+1)(9s+1)+5(9s+1)\\=(9s+6)(9s+1)\)
12. \((q+2)(q-1)-(4q+5)(q+2)\\=(q+2)(q-1-4q-5)\\=(q+2)(-3q-6)\)