Question

help plzzzzzssssssss

Answer 1

Answer:

Step-by-step explanation:

AC²=AD²+DC²           (RIGHT TRIANGLE )

AB²=AD²+BD²              (RIGHT TRIANGLE)

AC²=AD²+DC²

AC²=AD²+(BC-BD)²

AC²=AD²+BC²+BD²-2BC.BD

AC²=(AD²+BD²)+BC²-2BC.BD

AC²=AB²+BC²-2BC.BD

Answer 2

Answer:

Step-by-step explanation:

Hope it's help you