Toán Lớp 9: rút gọn biểu thức (4√2 + 2√5)√5 + √164
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Toán Lớp 9: rút gọn biểu thức (4√2 + 2√5)√5 + √164
Comments ( 2 )
= 4.\sqrt{2} . \sqrt{5} + 2.5 + 2\sqrt{41}
= 4\sqrt{10} + 10 + 2\sqrt{41}