And explain.

triangle abc with segment bd where point d is between points c and a, bc equals x, bd equals y, cd equals w, da equals z, and ba equals v what expression represents the value of v?

v equals the square root of quantity z times y end quantity

v equals the square root of quantity w times z end quantity

v equals the square root of quantity w times the sum of w plus z end quantity

v equals the square root of quantity z times the sum of w plus z end quantity