Add or subtract the polynomials. (7x2+x−2)−(−5x3−4)
To subtract the polynomials (7x^2 + x - 2) - (-5x^3 - 4), we need to distribute the negative sign throughout the second polynomial and then combine like terms.
First, distribute the negative sign:
7x^2 + x - 2 + 5x^3 + 4
Now, combine like terms:
5x^3 + 7x^2 + x + 4 - 2
This simplifies to:
5x^3 + 7x^2 + x + 2