Answer:
(5x² + 3) - ( 2x² + 4x - 12) = 3x² - 4x + 15
Explanation:
The given expression is
(5x² + 3) - ( 2x² + 4x - 12)
To find the subtraction result
(5x² + 3) - ( 2x² + 4x - 12) = 5x² + 3 - 2x² - 4x + 12
= 5x² - 2x² - 4x + 3 + 12
= 3x² - 4x + 15
Therefore the correct answer is
(5x² + 3) - ( 2x² + 4x - 12) = 3x² - 4x + 15