Hi friends
Can u just solve the 12th one pls
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Answered by
1
Use mid point theorem.
By mpt, [X + 3] / X = X/ [3X+4]
We get X on solving the quadratic equation.
Answered by
1
Step-by-step explanation:
use Thales theorem( basic praportionality theorm.
CD/DA=CE/EC
x+3/8x+9=x/3x+4
cross multiplication
(8x+9)x=(x+3)(3x+4)
8x^2+9x=3x^2+4x+9x+12
8x^2-3x^2=13x-9x+12
5x^2=4x+12
5x^2-4x=12
5x-4x=√12
x=6
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