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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: Bài 1:Tính a, 7+√48 b, 5-√24 c, 12-2√32 Bài 2: Tìm x, biết: a, √3-x <5 b, √x+5 =10 Các bn giải giúp mik vs!!! Thanks>3

Toán Lớp 9: Bài 1:Tính
a, 7+√48
b, 5-√24
c, 12-2√32
Bài 2: Tìm x, biết:
a, √3-x <5 b, √x+5 =10 Các bn giải giúp mik vs!!! Thanks>3

Comments ( 1 )

  1. $Bài1:$
    $a)$ $7$ $+$ $\sqrt{48}$ $=$ $7$ $+$ $4\sqrt{3}$ 
    $b)5-\sqrt{24} $ $=$ $5-2\sqrt{6}$
    $c)12-2\sqrt{32}$ $=$ $12-8\sqrt{2}$
    $Bài2:$
    $a)$  $\sqrt{3}$ $-$ $x$ $<$ $5$
    $⇔$ $-x$ $<$ $5$ $-$ $\sqrt{3}$
    $b)$ $\sqrt{x}$ $+$ $5$ $=$ $10$ 
    $⇔$ $\sqrt{x}$ $=$ 5
    $⇔$ $x=25$
     

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222-9+11+12:2*14+14 = ? ( )