(3 - i)(3 + i)
5
The question contains an expression but not an equation. You cannot solve an expression.
4
(x - 2)(2x - 3)
(x - 3)(x + 3)
That can be factored to -((x + 5)(x - 3))
The expression x2 + 1x - 12 can be factored out as (x - 3)(x + 4)
x³ - x² + x - 3 (x² + 1)(x - 1) - 2
You can only get a specific number for an expression if you assign numbers to the variables. As an expression, the existing expression cannot be simplified.
7
2x squared minus 5x minus 3 factored is (2x+1)(x-3).