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Verified answer
Difoto aja ya biar lebih jelas= 3√150 : √3
= 3√(5.5.6) : √3
= 3.5√6 : √3
= 15√6 : √3
= 15√2 (C)
7) 2√5 - 6 (B)
[tex] \frac{8}{ \sqrt{5} + 3} \times \frac{ \sqrt{5} - 3 }{ \sqrt{5} - 3} = \frac{8( \sqrt{5} - 3)}{5 - 3 \sqrt{5} + 3 \sqrt{5} - 9 } = \frac{8 \sqrt{5} - 24}{5 - 9} = \frac{8 \sqrt{5} - 24}{ - 4} = - 2 \sqrt{5} + 6