giai bat phuong trinh |x-1|+|x-2|>x+3
giai cac phuong trinh va bat phuong trinh sau:
2(x-1)-5=3(5-3x)
2( x - 1 ) - 5 = 3( 5 - 3x)
2x - 2 - 5 = 15 - 9x
2x - 7 = 15 - 9x
2x + 9x = 15 + 7
11x = 22
x = 2
Vậy x = 2
\(2\left(x-1\right)-5=3\left(5-3x\right)\)
\(\Leftrightarrow2x-2-5=15-9x\)
\(\Leftrightarrow2x-\left(2+5\right)=15-9x\)
\(\Leftrightarrow2x-7=15-9x\)
\(\Leftrightarrow2x+9x=15+7\)
\(\Leftrightarrow11x=22\)
\(\Leftrightarrow x=22\div11\)
\(\Leftrightarrow x=2\)
\(\text{Vậy }x=2\)
2( x - 1 ) - 5 = 3( 5 - 3x)
2x - 2 - 5 = 15 - 9x
2x - 7 = 15 - 9x
2x + 9x = 15 + 7
11x = 22
x = 2
giai bat phuong trinh (x^2-2x-3)^2<(x^2(x^2-4x-2)+3(5x-1)
=>x^4+4x^2+9-4x^3-6x^2+12x<x^4-4x^3-2x^2+15x-3
=>-2x^2+12x+9<-2x^2+15x-3
=>-3x<-12
=>x>4
giai bat phuong trinh
2(x-3) - 5x -3
\(\dfrac{5}{x-5}\) - \(\dfrac{1}{x+1}\) - \(\dfrac{x-5}{\left(x+1\right)\left(x-5\right)}\)
giai bat phuong trinh va bieu dien tren truc so
5x - 2 > 2(x + 3)
5x-2>2(x+3)\(\Leftrightarrow\)5x-2>2x+6
\(\Leftrightarrow\) 5x-2x>6+2
\(\Leftrightarrow\)3x>8
\(\Leftrightarrow\)x>\(\dfrac{8}{3}\)
Chúc bn học tốt❤
Giai bat phuong trinh sau (x-1)(2x+3)<x(2x+1)-1
Giai Bat Phuong Trinh
\(\frac{x+2}{x-3}\)> 1
Đề \(\frac{x+2}{x-3}>1\)
\(\Rightarrow\frac{x+2}{x-3}>\frac{x-3}{x-3}\)
\(\Rightarrow x+2>x-3\)
\(\Rightarrow x-x>-2-3\)
\(\Rightarrow S=\varnothing\)
ĐỀ\(\Leftrightarrow x+2>x-3\Leftrightarrow x-x>-3-2\Leftrightarrow0>-5\)
vì bất đằng thức cuối đúng => bất đẳng thức đầu đúng
K MÌNH NHA =)) ^_^
giai bat phuong trinh x^3/x^2 -x/x-2 -2/x+2 >6
giai di giai di giai di............................................................
giai di ma , lam on
Giai bat phuong trinh : (x2+2x+4)(x-1)<0
\(bpt\Leftrightarrow\left[\left(x+1\right)^2+3\right]\left(x-1\right)< 0\)
\(\left(x+1\right)^2+3>0\Leftrightarrow x-1< 0\Leftrightarrow x< 1\)
Giai phuong trinh, bat phuong trinh sau:
x-3/x-2 + x-2/x-4 = 16/5x-4/5 - x + 4 > x/3 - x-2/2 Giai giup minh nhe. Cam on rat nhieu.giai bat phuong trinh 2*(x+m)>m*x