Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((9s+4)^2-(18s+8)\)
2. \((6b+5)^2+(24b+20)\)
3. \((b-9)(b-7)-(4b-2)(b-9)\)
4. \((y-9)(y+6)-(2y-8)(y-9)\)
5. \((s-3)(s-1)+(2s-5)(s-3)\)
6. \((4b+8)(b-7)+(4b+8)(3b-8)\)
7. \((5y-4)(y+5)-(5y-4)(2y+3)\)
8. \((7q+2)(q-8)-(7q+2)(4q+9)\)
9. \((8p+7)^2-(16p+14)\)
10. \((7s-9)^2+(14s-18)\)
11. \((a+3)(a+9)-(2a-2)(a+3)\)
12. \((2b+5)^2-(8b+20)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((9s+4)^2-(18s+8)\\=(9s+4)(9s+4)-2(9s+4)\\=(9s+2)(9s+4)\)
2. \((6b+5)^2+(24b+20)\\=(6b+5)(6b+5)+4(6b+5)\\=(6b+9)(6b+5)\)
3. \((b-9)(b-7)-(4b-2)(b-9)\\=(b-9)(b-7-4b+2)\\=(b-9)(-3b-5)\)
4. \((y-9)(y+6)-(2y-8)(y-9)\\=(y-9)(y+6-2y+8)\\=(y-9)(-y+14)\)
5. \((s-3)(s-1)+(2s-5)(s-3)\\=(s-3)(s-1+2s-5)\\=(s-3)(3s-6)\)
6. \((4b+8)(b-7)+(4b+8)(3b-8)\\=(4b+8)(b-7+3b-8)\\=(4b+8)(4b-15)\)
7. \((5y-4)(y+5)-(5y-4)(2y+3)\\=(5y-4)(y+5-2y-3)\\=(5y-4)(-y+2)\)
8. \((7q+2)(q-8)-(7q+2)(4q+9)\\=(7q+2)(q-8-4q-9)\\=(7q+2)(-3q-17)\)
9. \((8p+7)^2-(16p+14)\\=(8p+7)(8p+7)-2(8p+7)\\=(8p+5)(8p+7)\)
10. \((7s-9)^2+(14s-18)\\=(7s-9)(7s-9)+2(7s-9)\\=(7s-7)(7s-9)\)
11. \((a+3)(a+9)-(2a-2)(a+3)\\=(a+3)(a+9-2a+2)\\=(a+3)(-a+11)\)
12. \((2b+5)^2-(8b+20)\\=(2b+5)(2b+5)-4(2b+5)\\=(2b+1)(2b+5)\)