well, clearly, if a=72
√72 + √72 = 2√72
or, since √72 = 6√2, if a=2,
6√2 + √2 = 7√2
There are, of course, many more such values.
Describe the possible values of a such that √72 + √a simplifies to a single term.
I have seen several explanations on Jiskha & Slader, but I still don't understand all the steps all the way.
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