With this apex question: which of the following expressions is equal to 2x^2+18? a.(2x-6i)(x-3i) b.(2x-9i)(x+2i) c.(2x-6i)(x+3i) d.(2x-9i)(x-2i)

If you factor 2 from the original expression, you can recognize it as the difference of squares, and factor further accordingly.

... = 2(x^2 +9) = 2(x^2 -(3i)^2)

... = 2(x -3i)(x +3i)

... = (2x -6i)(x +3i) . . . . . matches selection C

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363