Question

Evaluate the expression. \(x^{2}-3 x\) when \(x=5\)

Short answer

The solution is \(10\).

Step-by-step solution

Substitution

Substitute \(x = 5\) into the expression \(x^{2} - 3x\). This gives the resulting expression: \(5^{2} - 3 * 5\).

Evaluate Exponent

Calculate \(5^{2}\), which is \(25\), to get \(25 - 3 * 5\).

Multiply

Now, perform the multiplication to get \(25 - 15\).

Subtract

Finally, perform the subtraction to get the final result.