Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((b+6)(b+9)+(2b-2)(b+6)\)
2. \((6y+1)^2+(30y+5)\)
3. \((7p+3)^2-(21p+9)\)
4. \((s-5)(s-8)+(2s-5)(s-5)\)
5. \((b+5)(b+6)+(2b+3)(b+5)\)
6. \((p-5)(p+3)-(3p+5)(p-5)\)
7. \((3x+3)(x+4)+(3x+3)(2x+4)\)
8. \((5q-3)(q+3)+(5q-3)(4q-6)\)
9. \((y-3)(y-5)+(5y+2)(y-3)\)
10. \((x+2)(x+9)-(2x+3)(x+2)\)
11. \((5y-1)(y+5)-(5y-1)(2y+9)\)
12. \((9a-4)^2+(45a-20)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((b+6)(b+9)+(2b-2)(b+6)\\=(b+6)(b+9+2b-2)\\=(b+6)(3b+7)\)
2. \((6y+1)^2+(30y+5)\\=(6y+1)(6y+1)+5(6y+1)\\=(6y+6)(6y+1)\)
3. \((7p+3)^2-(21p+9)\\=(7p+3)(7p+3)-3(7p+3)\\=(7p+0)(7p+3)\)
4. \((s-5)(s-8)+(2s-5)(s-5)\\=(s-5)(s-8+2s-5)\\=(s-5)(3s-13)\)
5. \((b+5)(b+6)+(2b+3)(b+5)\\=(b+5)(b+6+2b+3)\\=(b+5)(3b+9)\)
6. \((p-5)(p+3)-(3p+5)(p-5)\\=(p-5)(p+3-3p-5)\\=(p-5)(-2p-2)\)
7. \((3x+3)(x+4)+(3x+3)(2x+4)\\=(3x+3)(x+4+2x+4)\\=(3x+3)(3x+8)\)
8. \((5q-3)(q+3)+(5q-3)(4q-6)\\=(5q-3)(q+3+4q-6)\\=(5q-3)(5q-3)\)
9. \((y-3)(y-5)+(5y+2)(y-3)\\=(y-3)(y-5+5y+2)\\=(y-3)(6y-3)\)
10. \((x+2)(x+9)-(2x+3)(x+2)\\=(x+2)(x+9-2x-3)\\=(x+2)(-x+6)\)
11. \((5y-1)(y+5)-(5y-1)(2y+9)\\=(5y-1)(y+5-2y-9)\\=(5y-1)(-y-4)\)
12. \((9a-4)^2+(45a-20)\\=(9a-4)(9a-4)+5(9a-4)\\=(9a+1)(9a-4)\)