$$\mathrm{\ }$$(x-3)(x^2+3x-4)
Solve the equation with an exact answer
It's not an equation. For it to be an equation, something has to be equal to something else.
There is nothing to solve, this is just an expression that can be written in different ways.
multtiply each term,
x3+3x2-4x-3x2-4x-3x2-9x+12
combine like terms.