Discuss Forum

1. 3x+4x+1=2

  • A. 2
  • B. 2
  • C. 2
  • D. 2

Answer: Option C

Explanation:

3/x + 4/(x + 1) = 2

= > {3(x + 1) + 4x }/x(x + 1) = 2

= > {3x + 3 + 4x} = 2 (x2 + x)

= > 7x + 3 = 2x2 + 2x

= > 2x2 - 5x - 3 = 0

= > 2x2 - 6x + x - 3 = 0

= > 2x(x - 3) + 1(x - 3) = 0

= > (2x + 1) (x - 3) = 0

if,

x - 3 = 0

= > x = 3


Post your comments here:

Name:
Mobile:
Email:(Optional)

» Your comments will be displayed only after manual approval.