Answer:
4x³ - 4x² - 4x -8
Step-by-step explanation:
It is given that,
4x³ - 12x² - 5 -(-8x² + 4x + 3) -----(1)
This expression shows the subtraction of two algebraic expression.
Let eq(1) 4x³ - 12x² - 5 -(-8x² + 4x + 3)
⇒4x³ - 12x² - 5 +8x² - 4x - 3 (open bracket)
= 4x³ - 12x² + 8x² - 4x -5 -3 (write similar terms together)
= 4x³ - 4x² - 4x -8
Therefore the difference of 4x³ - 12x² - 5 -(-8x² + 4x + 3) is given by,
4x³ - 4x² - 4x -8
