Ejercicio 1

• 2x + 3 = -(x + 2)

2x + 3 = -x – 2

2x + x = - 2 -3

x = - 5

3

• (x + 3)²

x² + 6x + 9

• (x + 2)(x – 2)

x2 + 4

• (x – 2)³

x2 – 6x2 + 12x – 8

• 7 + 8 = - 2

x

7 = - 2 – 8

x

7 = - 10x

x = - 7

10

• ( x + 2) = 1

( x + 2)

• x + 2
  (x + 2)²

1 = - 3

x + 2

1 = - 3 (x + 2)

7 = - 3x

-7 = x

x

• (x + 2)²

x + 2

(x + 2) = 1

x = 1 – 2

x = -1

• ( x + 2) - 1 = (x + 2)
  x + 5

( x + 2) = x + 2 + 1

x + 5

(x + 2) = (x + 3)(x + 5)

0 = x² + 7x + 13

• x⁷ + x⁵ – x² = x
• x⁶ x⁴ x