Question

solution of (3x)cube + (4x) cube - (5z) cube + 2(3x)(4y)(5z)

Answer 1

${3x}^{3} + {4x}^{3} - {5z}^{3} + 2 (3x)(4y)(5z) \\ = 27 {x}^{3} + 64 {x}^{3} - 125 {z}^{3} + 6x(4y)(5z) \\ = 91 {x}^{3} -125z^3+ 120xyz$
hope it will help you!