C-03-Q040mediumsingle_mcqIn △ABC\triangle ABC△ABC, AB=ACAB = ACAB=AC and PPP is a point on BCBCBC. Then AB2−AP2=AB^2 - AP^2 =AB2−AP2=aBP⋅PCBP \cdot PCBP⋅PCbBP+PCBP + PCBP+PCc