giup minh cau nay voi a: (2 √18 + 3 √8 – 6 √2) : √2 18/07/2021 Bởi Adalynn giup minh cau nay voi a: (2 √18 + 3 √8 – 6 √2) : √2
a) ($2\sqrt[]{18}+3\sqrt[]{8}-6\sqrt[]{2}$):$\sqrt[]{2}$ = ($2\sqrt[]{3^2.2}+3\sqrt[]{2^2.2}-6\sqrt[]{2}$):$\sqrt[]{2}$ = ($2.3\sqrt[]{2}+3.2\sqrt[]{2}-6\sqrt[]{2}$):$\sqrt[]{2}$ = ($6\sqrt[]{2}+6\sqrt[]{2}-6\sqrt[]{2}$):$\sqrt[]{2}$ = [$\sqrt[]{2}(6+6-6)$]:$\sqrt[]{2}$ =$6\sqrt[]{2}$:$\sqrt[]{2}$ = 6 CHÚC BẠN HỌC TỐT Bình luận
$(2\sqrt[]{18}+3\sqrt[]{8}-6\sqrt[]{2}):\sqrt[]{2}$ $=(2.\sqrt[]{9.2}+3\sqrt[]{4.2}-6\sqrt[]{2}):\sqrt[]{2}$ $=(2.3\sqrt[]{2}+3.2\sqrt[]{2}-6\sqrt[]{2}):\sqrt[]{2}$ $=(6\sqrt[]{2}+6\sqrt[]{2}-6\sqrt[]{2}):\sqrt[]{2}$ $=6\sqrt[]{2}:\sqrt[]{2}$ $=6$ Bình luận
a) ($2\sqrt[]{18}+3\sqrt[]{8}-6\sqrt[]{2}$):$\sqrt[]{2}$
= ($2\sqrt[]{3^2.2}+3\sqrt[]{2^2.2}-6\sqrt[]{2}$):$\sqrt[]{2}$
= ($2.3\sqrt[]{2}+3.2\sqrt[]{2}-6\sqrt[]{2}$):$\sqrt[]{2}$
= ($6\sqrt[]{2}+6\sqrt[]{2}-6\sqrt[]{2}$):$\sqrt[]{2}$
= [$\sqrt[]{2}(6+6-6)$]:$\sqrt[]{2}$
=$6\sqrt[]{2}$:$\sqrt[]{2}$
= 6
CHÚC BẠN HỌC TỐT
$(2\sqrt[]{18}+3\sqrt[]{8}-6\sqrt[]{2}):\sqrt[]{2}$
$=(2.\sqrt[]{9.2}+3\sqrt[]{4.2}-6\sqrt[]{2}):\sqrt[]{2}$
$=(2.3\sqrt[]{2}+3.2\sqrt[]{2}-6\sqrt[]{2}):\sqrt[]{2}$
$=(6\sqrt[]{2}+6\sqrt[]{2}-6\sqrt[]{2}):\sqrt[]{2}$
$=6\sqrt[]{2}:\sqrt[]{2}$
$=6$