Simplify 3d

Question

3
+9d−18+4d
3
−2d by combining like terms.

7d
3
+7d−18

7d
3
+11d−18

7d
6
+7d
2
−18

3d
3
+11d−18

Answer 1

To simplify the expression \( 3d^3 + 9d - 18 + 4d^3 - 2d \), we can combine like terms.

1. Combine the \(d^3\) terms:

   • \(3d^3 + 4d^3 = 7d^3\)

2. Combine the \(d\) terms:

   • \(9d - 2d = 7d\)

3. The constant term remains the same:

   • \(-18\)

Putting it all together, we have: \[ 7d^3 + 7d - 18 \]

So the simplified expression is: \[ \boxed{7d^3 + 7d - 18} \]