To add the polynomial expressions \( 3 - 2p - 5p^2 \) and \( p^4 - 3p + 4 \), you can combine like terms:
-
Write the polynomials in a standard form (descending powers of \( p \)):
- First polynomial: \( -5p^2 - 2p + 3 \)
- Second polynomial: \( p^4 - 3p + 4 \)
-
Align them for addition: \[ \begin{array}{r} p^4 \
- 5p^2 \
- 2p \
- 3 \
- 4 \ \end{array} \]
-
Combine like terms:
- The \( p^4 \) term: \( 1p^4 \) (only from the second polynomial)
- The \( p^2 \) term: \( -5p^2 \) (only from the first polynomial)
- The \( p \) term: \( -2p - 3p = -5p \)
- The constant terms: \( 3 + 4 = 7 \)
-
Combine all together: \[ p^4 - 5p^2 - 5p + 7 \]
So, the result of adding the polynomials \( 3 - 2p - 5p^2 \) and \( p^4 - 3p + 4 \) is:
\[ \boxed{p^4 - 5p^2 - 5p + 7} \]