Question

1. Reducir: (x+1)(x–1)+(x+2)(x–2)+(x+3)(x–3)
2. Reducir: (x+3)(x2–3x+9) + (x–3)(x2+3x+9)
3. Reducir: (x+1)(x+5)+(x+3)(x–9)
4. Reducir: (x+1)3 + (x–1)3 – 2x3
5. Reducir: (x+4)(x–4) – (x+8)(x–2)
almenos ayudenme con una

Answer 1

1.

(x+1)(x–1)+(x+2)(x–2)+(x+3)(x–3)

x²-1+x²-4+x²-9

3x²-14.

2.

 (x+3)(x2–3x+9) + (x–3)(x2+3x+9)

x³+27+x³-27

2x³

3.

(x+1)(x+5)+(x+3)(x–9)

x²+6x+5+x²-6x-27

2x²-22

4.
   

(x+1)3 + (x–1)3 – 2x3

3x+3+3x-3-2x³

6x-2x³

5.


(x+4)(x–4) – (x+8)(x–2)

x²-16-(x²+6x-16)

x²-16-x²-6x+16

-6x.

Saludos.