If vector p1p = - 2 / 5, vector PP2, let vector p1p2 = λ vector PP1, then the value of λ is

If vector p1p = - 2 / 5, vector PP2, let vector p1p2 = λ vector PP1, then the value of λ is

Vector p1p = - 2 / 5, vector PP2,
Vector p1p = - 2 / 5 (vector PP1 + vector p1p2)
-Vector PP1 = - 2 / 5 vector PP1 - 2 / 5 vector p1p2
(- 1 + 2 / 5) vector PP1 = - 2 / 5 vector p1p2
-3 / 5 vector PP1 = - 2 / 5 vector p1p2
3 vector PP1 = 2 vector p1p2
Vector p1p2 = 3 / 2 vector PP1
λ=3/2