\[\sqrt{26 + b}\]
\[b = 10:\]
\[\sqrt{26 + 10} = \sqrt{36} = 6.\]
\[b = - 1:\]
\[\sqrt{26 - 1} = \sqrt{25} = 5.\]
\[b = 23:\]
\[\sqrt{26 + 23} = \sqrt{49} = 7.\]
\[b = - 17:\]
\[\sqrt{26 - 17} = \sqrt{9} = 3.\]
\[b = 74:\]
\[\sqrt{26 + 74} = \sqrt{100} = 10.\]