50
Step-by-step explanation:
Since AE is the bisector of angle BAC,so angle BAE and Angle CAE is equal. Here Angle CAE and Angle EAC is same.
therefore,
m(Angle BAE)=m(Angle EAC)

or, 2x=40
or, x=20
Hence,
m(Angle EAC)=

=

The exponent in the equation is the 5.
It would either be 21 or 25 as they both have the same amount of factors :)
84/56=1.5 - it is 1% of number
1.5*100=150
Answer: 150