# What is the value of the expression #a^2+b^3# when #a=1/3# and #b=1/2#?

##### 1 Answer

In support of Brian's solution:

#### Explanation:

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A fraction consists of:

You can only add the counts if the 'size indicators' are the same.

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Multiply by 1 and you do not change the vale but 1 comes in many forms:

This makes the size indicators the same, giving: