sederhanakan a.3√2-2√2= b.√20-√5= c.√50=

A.
[tex]3 \sqrt{2} - 2 \sqrt{2} \\ = (3 - 2) \sqrt{2 } = 1 \sqrt{2} = \sqrt{2} [/tex]
B
[tex] \sqrt{20} - \sqrt{5} \\ = 2 \sqrt{5} - (1) \sqrt{5} = (2 - 1) \sqrt{5} = \sqrt{5} [/tex]
C.
[tex] \sqrt{50} = \sqrt{ {5}^{2} } \times 2 = \sqrt{ {5}^{2} } \sqrt{2} = \sqrt{25} \sqrt{2} \\ = 5 \sqrt{2} [/tex]