[tex]A=\sqrt{(-3)^{2} }[/tex]
[tex]A= 3[/tex]
[tex]B= (2\sqrt{7})^{2}[/tex]
[tex]B=4*7[/tex]
[tex]B=28[/tex]
[tex]C=(5+\sqrt{2} )^{2}[/tex]
[tex]27 +10\sqrt{2}[/tex]
[tex]D=(\sqrt{6+1} )(-3\sqrt{6+5} )[/tex]
[tex]D=3\sqrt{(6+1)*11}[/tex]
[tex]D=3\sqrt{7*11}[/tex]
[tex]D=-3\sqrt{77}[/tex]
[tex]E=2x^{2} +(x\sqrt{3} )^{2}[/tex]
[tex]E=2x^{2} +3x^{2}[/tex]
[tex]E=5x^{2}[/tex]
