Can you please explain his steps with text and words please thank you

Solution - liven vectors are U = (41 - 6, 11) = 40- 67+112 D = ( - 10 , 14 , 12 ) = - 102 + 14 7 + 12 k W = ( 15 , 7 , 8 ) = 152+ 71+ 8k ED Now, Scalar triple product for three vectors out, V, is is given by [u V W ] = (ux V ). W x = cross product . = dot product VI V3 W W 2 W 2 Putting values from @ in above egh, we have 4 d x v ) . w - 6 11 - 10 14 12 15 Now, finding determinant , we have = 4 [ 14 X8 - 7x 12 ] - (-6) [1-10)X8 - 12x15) ] + 11 (1-10 ) * 7 - 14 *15} ) 2 4 x[112 - 04] +6[-80-100]+11[-70-210) = (4x 28) +(6 x1-260)) + 11x (-280) = 112 - 1560-3080 = 112 - (1560+ 3080) = 112 - (4640 ) ( U X V ) . W = - 4520