Answers

2014-11-07T01:06:03+08:00
Taking the sum of the two quadratic expressions you'll have:
      3x² - 2x + 4
+    2x² + 6x - 10
      5x² + 4x - 6
subtracting 2x² - 4x - 2 you'll have:
     5x² + 4x - 6
-   2x² - 4x - 2
    3x² + 8x - 4
therefore the answer is 3x² + 8x - 4
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