The product of (1/2 3/4i) and(1/2-3/4i) divided by (2-3i)

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12