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In quadrilateral A C B D ,\ A C=A D\ a n...

In quadrilateral `A C B D ,\ A C=A D\ a n d\ A B\ ` bisects `/_A` . Show that ` A B C\ ~= A B Ddot` What can you say about `B C\ a n d\ B D ?`

Text Solution

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`3x-7y^2+3xyz=3(2)-7(-4)^2+3(2)(-4)(1)`
`=6-7xx16-6xx4`
`=6-112-24`
`=6-136`
`=130`
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