1.

Please answer....................​

Answer»

ANSWER:

ANSWER

In Δ ABC, DE ∥ BC

∴

DB

AD

=

EC

AE

(By basic PROPORTIONALITY THEOREM)

⇒

x−2

x

=

x−1

x+2

⇒x(x−1)=(x+2)(x−2)

⇒x

2

−x=x

2

−4

⇒x=4.


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