Question

Find the difference of (−5x2 − 4x3 − 3) − (9x3 + 3x − 8x2).
please not just the answer can you explain it please

Answer 1

\(\bf (-5x^2 - 4x^3 - 3) - (9x^3 + 3x - 8x^2)\\ \quad \\
\textit{keep in mind that}- (9x^3 + 3x - 8x^2) \implies -9x^3 - 3x + 8x^2\\ \quad \\
-5x^2 - 4x^3 - 3-9x^3 - 3x + 8x^2\\ \implies - 4x^3-9x^3-5x^2+ 8x^2 - 3x - 3\)

now add like-terms

Answer 2

thanks