tolong dijawab kak buat besok pagi

[tex]c.( \sqrt{3} + 2)( \sqrt{3} + 2) = 9 + 2 \sqrt{3} + 2 \sqrt{3} + 4 = 9 + 4 \sqrt{3} + 4 = 13 + 4 \sqrt{3} [/tex]
[tex]d.( \sqrt{5} + \sqrt{3} )( \sqrt{5} + \sqrt{3} ) = 5 + \sqrt{15} + \sqrt{15} + 3 = 5 + 2 \sqrt{15} + 3 = 8 + 2 \sqrt{15} [/tex]
[tex]e.(2 \sqrt{2} - \sqrt{5} )(2 \sqrt{2} - \sqrt{5} ) = 4 \sqrt{4} - 2 \sqrt{10} - 2 \sqrt{10} + 5 = 4 \times 2 - 4 \sqrt{10} + 5 = 8 - 4 \sqrt{10} + 5 = 13 - 4 \sqrt{10} [/tex]