Toán Lớp 7: 5$\sqrt{16}$-4$\sqrt{9}$+$\sqrt{25}$-0,3$\sqrt{400}$
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Toán Lớp 7: 5$\sqrt{16}$-4$\sqrt{9}$+$\sqrt{25}$-0,3$\sqrt{400}$
Comments ( 2 )
= 5\sqrt{4^2} – 4\sqrt{3^2} + \sqrt{5^2} – 0,3 \sqrt{20^2}
= 5.4 – 4.3 + 5 – 0,3.20