(x I this paper we consider the initial boundary value problem for a nonlinear damping and a delay term of the form: |u_t|^lu_tt- u, u_tt+_1|u_t|^m-2u_t\\+_2|u_t(t-)|^m-2u_t(t-)=b|u|^p-2u t)-, on with initial conditions and D boundary conditions. U appropriate conditions, . we prove that there are solutions with negative initial energy that blow- up finite time if. Blow-up of Result in a Nonlinear Wave Equation with Delay and Source Term. DNC [Internet]. 2026 Aug. 17 [cited 2026 Aug. 17];10(4):733-41. Available from: https://lhscientificpublishing.com/index.php/DNC/article/view/1751