Question

In the adjacent figure for which value of x is QR||AB​

Answer 1

Answer:

x = -2 +- root 3

Step-by-step explanation:

By Basic Proportionality Theorem,

PA/AQ = PB/BR

==> 2x/(x-1) = (x+1)/(x+2)

==> 2x^2 + 4x = x^2 - 1

==> x^2 + 4x + 1 =0

solving the above quadratic equation,

x = -2 +- root 3