Math Snap

STEP 1

Assumptions1. The expression is a polynomial.
. The variables in the expression are real numbers.

STEP 2

The first step in simplifying the expression is to group like terms together. In this case, we have two types of terms the terms with $x^{2}$ and the constant terms.
$$x^{2} -9 x^{2} -7 +11 +5 x$$

STEP 3

Next, we simplify the terms with $x^{2}$ by subtracting $9 x^{2}$ from $3 x^{2}$.
$$3 x^{2} -9 x^{2} = -6 x^{2}$$

STEP 4

Now, we simplify the constant terms by adding $11$ to $-7$.
$$-7 +11 =4$$

Finally, we write the simplified expression by combining the simplified terms from steps3 and4, and the term with $x$.
$$- x^{2} +5 x +4$$So, the simplified expression is $- x^{2} +5 x +4$.