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3√2 + 3√8 - √72 = 3√2 + 3 √4√2 - √36√2
= 3√2 + 3×2√2 - 6√2
= 3√2 + 6√2 - 6√2
= 3√2
nomer 6
x
= x
= x
= 5 x 16
=80
=3√2+3√4x2-√36x2
=3√2+3x2√2-√6x2
=3√2+6√2-6√2
=(3+6-6)√2
=3√2
semoga membantu