Question

how do you work out though the first 2 and the last 2 are small
5xy-x2t+2xy+3x2t
and it wont let me put the symbol ^

Answer 1

Answer:

ANSWER

AD=AC ( Given )

So, ∠ACD=∠ADC [ Angles opposite to equal sides are equal ]

Now ∠ACD is exterior angle of △ABD

∠ADC=∠ABD+∠BAD [ exterior angles sum of interior opposite angles ]

So, ∠ADC>∠ABD

∠ACD>∠ABD ( from (1))

AB>AC [ side opposite to greater angle is longer ]

∴AB>AD ( As AC=AD given )

Hence, proved.