So AM=X- 1, CM=X+ 1.
So CA=2 times the root number X.
So Y= 1/2*OM*CA=X times the root number X.
(2) Because OA= 1 and AB=2, the diameter of circle N is 2, so the sum of the diameters of circle O and circle N is 4.
So the point m is on the circle n.
Let NP be perpendicular to CM
So triangle NPM is equal to triangle cam.
So NP:CA=NM:CM, which means NP: 8 = 1: 5.
So NP = 8/5, which means NP is greater than 1.
So the straight line CM is separated from the circle n.
(3) ME is perpendicular to OP because MP = Mo and OE = PE.
Because OE=OA, angle MOE= angle COA, angle MEO= angle CAO=90 degrees.
So the MOE of the triangle is equal to the COA of the triangle.
So OM=OC
In RT triangle COA, OC=X, OA= 1, CA=2 times the root X.
According to Pythagorean Theorem, X=2+ radical number 5.