If tan θ + sec θ = (x – 2)/(x + 2), then what is the value of cos θ?

• (x2 – 1)/(x2 + 1)
• (2x2 – 4)/(2x2 + 4)
• (x2 – 4)/(x2 + 4)
• (x2 – 2)/(x2 + 2)