Answer
$x^2+3x-5$
Work Step by Step
By combining like terms, the given expression, $
(x^2-5x+4)+(8x-9)
$, simplifies to
\begin{array}{l}
x^2+(-5x+8x)+(4-9)
\\\\=
x^2+3x-5
.\end{array}
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.