Question

3) in
In the
given figure, AB = BC and AL=(D.
Prove the AB that L BAD: LADB = 3:1
2
c​

Answer 1

According to equation,

DE∥BC

∴

BD

AD

=

CE

AE

(By B.P. Theorem)

or,

3x−1

4x−3

=

5x−3

8x−7

or, 24x

2

−29x+7=20x

2

−27x+9

or, 4x

2

−2x−2=0

or, 2x

2

−x−1=0

Again, 2x

2

−x−1=0

or, 2x

2

−2x+1=0

or, 2x(x−1)+1(x−1)=0

or, (2x+1)(x−1)=0

∴x=−

2

1

,1