[tex]\bf b)~ \sqrt{64} +\sqrt{36} = \sqrt{8^{2} } +\sqrt{6^{2}} =8 +6 =\boxed{\bf 14}[/tex]
[tex]\bf b)~ \sqrt{64+36} = \sqrt{100} =\sqrt{10^{2}} =\boxed{\bf 10}[/tex]
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[tex]\bf c)~ \sqrt{25} +\sqrt{144} = \sqrt{5^{2} } +\sqrt{12^{2}} =5 +12 =\boxed{\bf 17}[/tex]
[tex]\bf c)~ \sqrt{25+144} = \sqrt{169} =\sqrt{13^{2}} =\boxed{\bf 13}[/tex]
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[tex]\bf d)~ \sqrt{0} +\sqrt{16} = \sqrt{0^{2} } +\sqrt{4^{2}} =0+4 =\boxed{\bf 4}[/tex]
[tex]\bf d)~ \sqrt{0+16} = \sqrt{16} =\sqrt{4^{2}} =\boxed{\bf 4}[/tex]
