To solve the expression x³ – 1x³, we need to substitute the values of x into the expression.
First, let’s clarify the statement: if x = 1 or x = 3, we can evaluate the expression for both values of x.
For x = 1:
Substituting x = 1 into the expression:
- x³ = 1³ = 1
- 1x³ = 1 * 1³ = 1 * 1 = 1
- Now, substitute back into the expression:
- 1 – 1 = 0
For x = 3:
Now, let’s substitute x = 3 into the expression:
- x³ = 3³ = 27
- 1x³ = 1 * 3³ = 1 * 27 = 27
- Substituting back into the expression:
- 27 – 27 = 0
In both cases, regardless of whether x is 1 or 3, the value of the expression x³ – 1x³ is 0.