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

Toán Lớp 9: Rút gọn √3^2+4^2 giup √37^2-35^2

Toán Lớp 9: Rút gọn √3^2+4^2 giup
√37^2-35^2

Comments ( 2 )

  1. $@Mốc$
    +) $\sqrt[]{3^{2}+4^{2}}$ 
    = $\sqrt[]{9+16}$ 
    = $\sqrt[]{25}$
    = $5$
    +) $\sqrt[]{37^{2}-35^{2}}$ 
    = $\sqrt[]{(37-35).(37+35)}$ 
    = $\sqrt[]{2.72}$ 
    = $\sqrt[]{144}$
    = $12$ 
    Áp dụng hằng đẳng thức $A^{2}$ – $B^{2}$ = $(A-B).(A+B)$
    $#chucbanhoctotnhe;333$  
     

  2.  $\sqrt[]{3^{2} +4^{2}}$ $=$ $\sqrt[]{9+16}$ $=$$\sqrt[]{25}$ $=$$ 5$
    $\sqrt[]{37^{2} -35^{2} }$ $=$ $\sqrt[]{(37-35)(37+35)}$ $=$ $\sqrt[]{2.72}$ $=$ $\sqrt[]{144}$$=$$12$

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