A student writes $2^5+2^5=2^{10}$. Explain the error and express $2^5+2^5$ as a single power of

Question

A student writes $2^5+2^5=2^{10}$. Explain the error and express $2^5+2^5$ as a single power of $2$.[3]

Accepted Answer

The student used the multiplication rule for a sum; the correct result is $2^6$.

Checking an index-law claim