Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((8s-7)^2-(16s-14)\)
2. \((6q+7)(q-8)-(6q+7)(5q-7)\)
3. \((4a+3)(a+7)-(4a+3)(3a+5)\)
4. \((3x-7)(x-7)-(3x-7)(4x+2)\)
5. \((y-5)(y-4)-(5y-3)(y-5)\)
6. \((7y-3)^2-(21y-9)\)
7. \((5y+4)^2+(20y+16)\)
8. \((a-6)(a-6)+(4a+4)(a-6)\)
9. \((4q-7)(q-8)+(4q-7)(5q-9)\)
10. \((6q-5)^2+(18q-15)\)
11. \((2b+1)^2-(10b+5)\)
12. \((9a+1)^2-(45a+5)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((8s-7)^2-(16s-14)\\=(8s-7)(8s-7)-2(8s-7)\\=(8s-9)(8s-7)\)
2. \((6q+7)(q-8)-(6q+7)(5q-7)\\=(6q+7)(q-8-5q+7)\\=(6q+7)(-4q-1)\)
3. \((4a+3)(a+7)-(4a+3)(3a+5)\\=(4a+3)(a+7-3a-5)\\=(4a+3)(-2a+2)\)
4. \((3x-7)(x-7)-(3x-7)(4x+2)\\=(3x-7)(x-7-4x-2)\\=(3x-7)(-3x-9)\)
5. \((y-5)(y-4)-(5y-3)(y-5)\\=(y-5)(y-4-5y+3)\\=(y-5)(-4y-1)\)
6. \((7y-3)^2-(21y-9)\\=(7y-3)(7y-3)-3(7y-3)\\=(7y-6)(7y-3)\)
7. \((5y+4)^2+(20y+16)\\=(5y+4)(5y+4)+4(5y+4)\\=(5y+8)(5y+4)\)
8. \((a-6)(a-6)+(4a+4)(a-6)\\=(a-6)(a-6+4a+4)\\=(a-6)(5a-2)\)
9. \((4q-7)(q-8)+(4q-7)(5q-9)\\=(4q-7)(q-8+5q-9)\\=(4q-7)(6q-17)\)
10. \((6q-5)^2+(18q-15)\\=(6q-5)(6q-5)+3(6q-5)\\=(6q-2)(6q-5)\)
11. \((2b+1)^2-(10b+5)\\=(2b+1)(2b+1)-5(2b+1)\\=(2b-4)(2b+1)\)
12. \((9a+1)^2-(45a+5)\\=(9a+1)(9a+1)-5(9a+1)\\=(9a-4)(9a+1)\)