# Evaluate the expression: ab when a=-5 and b=10

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**Question**

Evaluate ab when a=-5 and b=10.

**Answer**

First, we must know that

**ab** is the same as:

Now, since

**a** is given as -5, we can substitute

**a** with -5. This is shown below:

Similarly,

**b** is given as 10. So, we can substitute

**b** with 10:

With this, we can now evaluate

**ab **as shown below:

You can learn more about

evaluating expression here.