4305

138dm²6cm²

2

35 dm² 

138 dm\(^2\) 6 cm2

2 km²

43 m² 5 dm² = 435 dm² 

13806 cm² = 138 dm2 6 cm2

2000000 m² = 2 km²

18 702 dm vuông = 187 m vuông 

600 : 24=? (dư ?)cho Mik đáp án nha PLZ Giair tửng số và câu giúp mik khó quá

187m2 va 2dm2

a,0,11.......b,1,25........c,0,0121........d,2,02

11 dm2 = 0,12 m2

1 m2 25 dm2 = 1,25 m2 

121 cm2 = 0,0121 m2

2m2 2 dm2 = 2,02 m2

*1m²=100dm²=10000cm²

a) 11dm² = 0,11m²

b) 1m² 25dm² = 1,25m²

c) 121cm² = 0,0121m²

d) 2m² 2dm² = 2,02m²

120 dm² x 5 + 4m² = 600 dm² +  4 m² = 6 m² + 4m² = 10 m²

=8,06 dm²

8,06

8,06 dm2

0m2... 09dm2... 56cm2...08mm2

95608mm² = 0m², 9dm², 56cm²,8mm²

100 97 m2

100 9700 dm2 

100dam² 97m²  = 100 970 000 cm²

100dam² 97m²  = 1 009 700 dm²

nhầm

100dam2 97m2 bằng 100970000 cm2

100dam2 97m2 bằng 1009700 dm2

\(\dfrac{x+2}{x-2}-\dfrac{2}{x^2-2x}=\dfrac{1}{x}\left(đk:x\ne0,x\ne2\right)\)

\(\Leftrightarrow\dfrac{\left(x+2\right)x-2}{x\left(x-2\right)}=\dfrac{x^2-2x}{x\left(x-2\right)}\)

\(\Leftrightarrow x^2+2x-2=x^2-2x\)

\(\Leftrightarrow4x=2\Leftrightarrow x=\dfrac{1}{2}\)

Cho mình sửa lại nhé:

\(\dfrac{x+2}{x-2}-\dfrac{2}{x^2-2x}=\dfrac{1}{x}\left(đk:x\ne0,x\ne2\right)\)

\(\Leftrightarrow\dfrac{\left(x+2\right)x-2}{x\left(x-2\right)}=\dfrac{x-2}{x\left(x-2\right)}\)

\(\Leftrightarrow x^2+2x-2=x-2\)

\(\Leftrightarrow x^2+x=0\)

\(\Leftrightarrow x\left(x+1\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=0\left(ktm\right)\\x=-1\left(tm\right)\end{matrix}\right.\)