[tex]a = \sqrt{81} + \sqrt{25} \\ b = \sqrt{16} + \sqrt{49} \\ a)a + b = 14 + 11 \\ \: \: \: a + b = 25 \\ \\ b) a {}^{2} + b {}^{2} \\ 14 {}^{2} + 11 {}^{2} \\ 296 + 121 \\ 417 \\ \\ a {}^{2} + b {}^{2} - 100 \\ 14 {}^{2} + 11 {}^{2} \\ 296 + 121 \\ 417 - 100 \\ 317.[/tex]
