tolong bantu Jangan lupa pake cara nya

[tex]a. \: \: x = \sqrt{6 {}^{2} - 3 {}^{2} } \\ = \sqrt{36 - 9} \\ = \sqrt{27} \\ = \sqrt{9 \times 3} \\ x = 3\sqrt{3} [/tex]
[tex] b \:. \: \sqrt{8 {}^{2} + 4 {}^{2} } \\ = \sqrt{64 + 16} \\ = \sqrt{80} \\ = \sqrt{16 \times 5} \\ = 4\sqrt{5} [/tex]
[tex] c. \: \: \sqrt{16 { }^{2} +20 {}^{2} } \\ = \sqrt{256 + 400} \\ = \sqrt{656} \\ = \sqrt{16 \times 41} \\ = 4\sqrt{41} [/tex]
[tex]d. \: \: \sqrt{10 {}^{2} + 48 {}^{2} } \\ = \sqrt{100 + 2304} \\ = \sqrt{4 \times 601} \\ = 2 \sqrt{601} [/tex]
maaf kalo salah