Question

Simplify the expression: 2z+5x2+(−3x2)−12+5−7x
(1 point)
x2
+
x
+
z
+

Answer 1

To simplify the expression \( 2z + 5x^2 + (-3x^2) - 12 + 5 - 7x \), we can combine like terms.

1. Combine the \( x^2 \) terms:
\[
5x^2 + (-3x^2) = 5x^2 - 3x^2 = 2x^2
\]

2. Combine the constant terms:
\[
-12 + 5 = -7
\]

3. Now, putting it all together, the expression becomes:
\[
2z + 2x^2 - 7 - 7x
\]

4. Finally, we can rearrange the terms in standard polynomial order (usually arranged by descending powers of \( x \)):
\[
2x^2 - 7x + 2z - 7
\]

So, the simplified expression is:
\[
2x^2 - 7x + 2z - 7
\]