Tweeterm als gem. factor (3)

Hoofdmenu Eentje per keer  🖨

Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

1. \((7s+7)(s+1)-(7s+7)(5s-4)\)
2. \((5x-5)(x+2)-(5x-5)(2x-5)\)
3. \((4y-3)^2-(8y-6)\)
4. \((7y-5)(y-2)+(7y-5)(2y-2)\)
5. \((7s+1)(s+8)-(7s+1)(4s+5)\)
6. \((2x+1)^2+(6x+3)\)
7. \((p+9)(p+2)-(3p+2)(p+9)\)
8. \((x+8)(x+3)-(5x-4)(x+8)\)
9. \((x+5)(x-7)+(3x+6)(x+5)\)
10. \((7x+9)(x+6)-(7x+9)(4x-6)\)
11. \((s-1)(s+5)-(5s+4)(s-1)\)
12. \((6a-5)^2-(30a-25)\)

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Zonder de gemeenschappelijke tweeterm af en 'kuis op'.

Verbetersleutel

1. \((7s+7)(s+1)-(7s+7)(5s-4)\\=(7s+7)(s+1-5s+4)\\=(7s+7)(-4s+5)\)
2. \((5x-5)(x+2)-(5x-5)(2x-5)\\=(5x-5)(x+2-2x+5)\\=(5x-5)(-x+7)\)
3. \((4y-3)^2-(8y-6)\\=(4y-3)(4y-3)-2(4y-3)\\=(4y-5)(4y-3)\)
4. \((7y-5)(y-2)+(7y-5)(2y-2)\\=(7y-5)(y-2+2y-2)\\=(7y-5)(3y-4)\)
5. \((7s+1)(s+8)-(7s+1)(4s+5)\\=(7s+1)(s+8-4s-5)\\=(7s+1)(-3s+3)\)
6. \((2x+1)^2+(6x+3)\\=(2x+1)(2x+1)+3(2x+1)\\=(2x+4)(2x+1)\)
7. \((p+9)(p+2)-(3p+2)(p+9)\\=(p+9)(p+2-3p-2)\\=(p+9)(-2p+0)\)
8. \((x+8)(x+3)-(5x-4)(x+8)\\=(x+8)(x+3-5x+4)\\=(x+8)(-4x+7)\)
9. \((x+5)(x-7)+(3x+6)(x+5)\\=(x+5)(x-7+3x+6)\\=(x+5)(4x-1)\)
10. \((7x+9)(x+6)-(7x+9)(4x-6)\\=(7x+9)(x+6-4x+6)\\=(7x+9)(-3x+12)\)
11. \((s-1)(s+5)-(5s+4)(s-1)\\=(s-1)(s+5-5s-4)\\=(s-1)(-4s+1)\)
12. \((6a-5)^2-(30a-25)\\=(6a-5)(6a-5)-5(6a-5)\\=(6a-10)(6a-5)\)