The kinematic equations of motion of two material points have the form x1 = A1t B1t² С1t³ and x2 = A2t В2t² C2t³, where В1 = 4 m/s², С1 = −3 m/s³, В1 = −2 m/s², С2 = 1 m/s³ . Determine the moment of time for which the accelerations of these points will be equal.