5 more than twice the cube of a number. Take this algebraic expression in pieces. The phrase a number means an arbitrary variable, let's call it x. x The cube of a number means we raise it to a power of 3 x^3 Twice the cube of a number means we multiply x^3 by 2 2x^3 5 more than twice the cube of a number means we multiply 2x^3 by 5 5(2x^3) Simplifying, we get: 10x^3
