Question

[•ɦà↭ƙĭềυ↭σαηɦ•]

Bài 1: Tìm $x$, biết:

1024. a) |x−3|=5x+8" role="presentation" style="border:0px; box-sizing:inherit; direction:ltr; display:inline-block; float:none; font-size:18.4px; line-height:0; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:1px 0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax_CHTML mjx-chtml">12−|x−3|=5x+8$12-|x-3|=5x+8$                                                                         
1025. b) (x+3)10=1024.1252.252" role="presentation" style="border:0px; box-sizing:inherit; direction:ltr; display:inline-table; float:none; font-size:18.4px; line-height:0; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:1px 0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax_CHTML mjx-chtml">(√x+3)10=1024.1252.252${\left(\sqrt{x}+3\right)}^{10}={1024.125}^2{.25}^2$
1026. c) $\frac{3-0,2x}{5}=\frac{7}{15}+1,4x$                                         
1027. d) (6427)x=4.59.710−511.79359.4" role="presentation" style="border:0px; box-sizing:inherit; direction:ltr; display:inline-block; float:none; font-size:18.4px; line-height:0; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:1px 0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax_CHTML mjx-chtml">(6427)x=4.59.710−511.79359.4

Bài 2: Tính

A = 123.1212.5−224.33752.114−302.115" role="presentation" style="border:0px; box-sizing:inherit; direction:ltr; display:inline-block; float:none; font-size:18.4px; line-height:0; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:1px 0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax_CHTML mjx-chtml">123.1212.5−224.33752.114−302.115$\frac{{12}^3{.121}^2.5-{22}^4{.3}^3}{{75}^2{.11}^4-{30}^2{.11}^5}$

B = $5\frac{11}{18}+\left(4\frac{1}{5}-3\frac{2}{9}\right)-\left(13\frac{1}{15}-\frac{2}{3}+\frac{7}{18}\right)+\left(\frac{2}{3}.\sqrt{2}-\sqrt{\frac{8}{9}}\right)$

$Bài\; 3:\; Tìm\; x\; biết:$

1. a) |x−2|=|2x+1|" role="presentation" style="border:0px; box-sizing:inherit; direction:ltr; display:inline-block; float:none; font-size:18.4px; line-height:0; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; overflow-wrap:normal; padding:1px 0px; position:relative; white-space:nowrap; word-spacing:normal" class="MathJax_CHTML mjx-chtml">|x−2|=|2x+1|$|x-2|=|2x+1|$                                                                       
2. b) $3\left(x+\frac{1}{2}\right)-\frac{1}{2}\left(4x-\frac{2}{3}\right)=\frac{5}{6}$
3. c) $\frac{7x+1}{4}=\frac{2x-9}{3}$