Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((6p+1)^2-(18p+3)\)
2. \((b+8)(b-4)+(2b+5)(b+8)\)
3. \((8a-7)^2+(24a-21)\)
4. \((2b+1)^2+(6b+3)\)
5. \((2p+3)^2+(10p+15)\)
6. \((7a+5)(a+5)-(7a+5)(3a-3)\)
7. \((3s+4)(s-4)-(3s+4)(5s-2)\)
8. \((7y-3)(y+1)-(7y-3)(3y-4)\)
9. \((7b+5)(b+4)-(7b+5)(3b+4)\)
10. \((7q+8)^2-(21q+24)\)
11. \((a-6)(a-5)-(4a+5)(a-6)\)
12. \((7q-7)(q+9)+(7q-7)(2q+6)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((6p+1)^2-(18p+3)\\=(6p+1)(6p+1)-3(6p+1)\\=(6p-2)(6p+1)\)
2. \((b+8)(b-4)+(2b+5)(b+8)\\=(b+8)(b-4+2b+5)\\=(b+8)(3b+1)\)
3. \((8a-7)^2+(24a-21)\\=(8a-7)(8a-7)+3(8a-7)\\=(8a-4)(8a-7)\)
4. \((2b+1)^2+(6b+3)\\=(2b+1)(2b+1)+3(2b+1)\\=(2b+4)(2b+1)\)
5. \((2p+3)^2+(10p+15)\\=(2p+3)(2p+3)+5(2p+3)\\=(2p+8)(2p+3)\)
6. \((7a+5)(a+5)-(7a+5)(3a-3)\\=(7a+5)(a+5-3a+3)\\=(7a+5)(-2a+8)\)
7. \((3s+4)(s-4)-(3s+4)(5s-2)\\=(3s+4)(s-4-5s+2)\\=(3s+4)(-4s-2)\)
8. \((7y-3)(y+1)-(7y-3)(3y-4)\\=(7y-3)(y+1-3y+4)\\=(7y-3)(-2y+5)\)
9. \((7b+5)(b+4)-(7b+5)(3b+4)\\=(7b+5)(b+4-3b-4)\\=(7b+5)(-2b+0)\)
10. \((7q+8)^2-(21q+24)\\=(7q+8)(7q+8)-3(7q+8)\\=(7q+5)(7q+8)\)
11. \((a-6)(a-5)-(4a+5)(a-6)\\=(a-6)(a-5-4a-5)\\=(a-6)(-3a-10)\)
12. \((7q-7)(q+9)+(7q-7)(2q+6)\\=(7q-7)(q+9+2q+6)\\=(7q-7)(3q+15)\)