Answer:
1. a) x1 = -8 y x2 = -4
b) x1 = -1/3
2. a) x1 = 0 y x2 = -5
b) x1 = 4 y x2 = -4
3. m debe ser 6. Asi tendriamos (x+3)²=0
4. a) x1 = 4, x2 = -4, x3 = 3 y x3 = -3
b) x1 = 3, x2 = -3 las otras dos raices son complejas.
Explanation:
1. a)
![x^(2)+12x+32=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/e5ikl7hsb81lplf2sf7q5n0da30eggvpp3.png)
Factorizando:
![(x+8)(x+4)=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/2z2qcj68xl7brz9gtdl1ka8xcxtuda3v1a.png)
Entonces: x1 = -8 y x2 = -4
4. a) x1 = 4, x2 = -4, x3 = 3 y x3 = -3
b)
![9x^(2)+6x+1=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/phfoyzdz35o3ebhm3gbwt31j70y5v5v2s3.png)
Factorizando:
![(3x+1)(3x+1)=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/8m6kln168oloy2l22z09ftu3joz349nfyz.png)
![(3x+1)^(2)=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/7x5cgfnwqssjh6zir04bve87rgzbzudli9.png)
Entonces: x1 = -1/3
2. a)
![2x^(2)+5x=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/xwkocj7hjmag1lj2yi475i6pq0qxwfkngz.png)
Aplicando factor comun:
![x(x+5)=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/alv5u6l5uzkoslct39oaiqgd6nlruheadm.png)
Entonces: x1 = 0 y x2 = -5
b)
![2x^(2)-32=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/tu7t0g94u0rywo78bts25hn97zv4xfa24l.png)
Despejamos x.
![2x^(2)=32](https://img.qammunity.org/2022/formulas/mathematics/high-school/2zpcugm7pasehhp5fsnw2azq4vkz0xl2zu.png)
![x^(2)=16](https://img.qammunity.org/2022/formulas/mathematics/high-school/14a4adwsgbwelxelrbar3u4c0gcadgx46e.png)
Entonces: x1 = 4 y x2 = -4
3. m debe ser 6. Asi tendriamos (x+3)²=0
4. a)
![x^(4)-25x^(2)+144=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/fdx3mtsn42vm8r7xovzce5bd0vqvc1zehv.png)
Hacemos cambio de variable:
![w=x^(2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/8l7o2mfcnds4edr92gkvh5l0z29i0ptojk.png)
![w^(2)-25w+144=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/uvwe542yo1wpbp6n6bt4ovnd61le73vs2x.png)
Ahara podemos factorizar:
Usando el cambio de variable nuevamente.
Entonces los valores de x son: x1 = 4, x2 = -4, x3 = 3 y x3 = -3
b)
Hacemos cambio de variable:
![z=x^(2)](https://img.qammunity.org/2022/formulas/mathematics/high-school/h4itzmqywsqj5dqe7gjzle7xo50nktdyjd.png)
![z^(2)+9z-162=0](https://img.qammunity.org/2022/formulas/mathematics/high-school/5vev87tn8w9m5kv2ycj1mbr9ayxikftwdw.png)
Ahara podemos factorizar:
Usando el cambio de variable nuevamente.
Entonces los valores de x son: x1 = 3, x2 = -3 las otras dos raices son complejas.
Espero ye haya servido!