Write a matlab scrip for the following

4) a) Create the symbolic variables: a bcdx, and use them to create the following symbolic expressions: 1 Pt each-15 Pts Total sel-x^3-3*x^2 + x se2 sin(x) + tan(x) sed = (x^2-9)(x +3) b) Divide sel by se2. c) Multiply se3 by se4. d) Divide sel by x e) Expand sel f) Simplify sel g) Factor sef h) Expand se2 i) Simplify se2 ) Factor se k) Expand se4 1) Simplify se4