Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

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

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

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