Question

plz answer this question asap....​

Answer 1

Step-by-step explanation:

using phytagores theorem

AD^2+BD^2=AC^2 (=AB^2)----------(1)

CD^2+BD^2=BC^2 ---------(2)

(2)-(2)^1 =>

=> CD^2-BD^2 =BC2-2AC^2+2AD^2

=> BC^2-2(AD+CD)^2+2AD^2

=> BC^2-2CD^2-4AD*CD

=> BD^2+CD^2-2CD^2-4AD

=> BD^2-CD^2-4AD*CD

SIMPLIFIED TO GET

BD^2-CD^2=2AD*CD