Ответы
Ответ дал:
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-4x+6=5x+10
9x=-4
x=-4/9
x=2
Ответ дал:
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1) ![( frac{1}{9}) ^{2x-5} = 3^{5x+10} ( frac{1}{9}) ^{2x-5} = 3^{5x+10}](https://tex.z-dn.net/?f=%28+frac%7B1%7D%7B9%7D%29+%5E%7B2x-5%7D+%3D+3%5E%7B5x%2B10%7D)
![3^{-2*(2x-5)} = 3^{5x+10} 3^{-2*(2x-5)} = 3^{5x+10}](https://tex.z-dn.net/?f=3%5E%7B-2%2A%282x-5%29%7D+%3D+3%5E%7B5x%2B10%7D)
![-2*(2x-5) = 5x+10, -4x+10 = 5x+10, x = 0 -2*(2x-5) = 5x+10, -4x+10 = 5x+10, x = 0](https://tex.z-dn.net/?f=-2%2A%282x-5%29+%3D+5x%2B10%2C++-4x%2B10+%3D+5x%2B10%2C++x+%3D+0)
2)![2^{x+2}*5^{x} = 400 2^{x+2}*5^{x} = 400](https://tex.z-dn.net/?f=2%5E%7Bx%2B2%7D%2A5%5E%7Bx%7D+%3D+400)
![2^{x}*4*5^{x} = 400 2^{x}*4*5^{x} = 400](https://tex.z-dn.net/?f=2%5E%7Bx%7D%2A4%2A5%5E%7Bx%7D+%3D+400)
![10^{x}= 100 10^{x}= 100](https://tex.z-dn.net/?f=10%5E%7Bx%7D%3D+100)
![10^{x} = 10^{2} 10^{x} = 10^{2}](https://tex.z-dn.net/?f=10%5E%7Bx%7D+%3D+10%5E%7B2%7D)
![x = 2 x = 2](https://tex.z-dn.net/?f=x+%3D+2)
3)![sqrt{2^{x}} * sqrt{3^{x}} =36 sqrt{2^{x}} * sqrt{3^{x}} =36](https://tex.z-dn.net/?f=+sqrt%7B2%5E%7Bx%7D%7D+%2A+sqrt%7B3%5E%7Bx%7D%7D+%3D36+)
![sqrt{6^{x}} =6^{2} sqrt{6^{x}} =6^{2}](https://tex.z-dn.net/?f=+sqrt%7B6%5E%7Bx%7D%7D+%3D6%5E%7B2%7D+)
![6^{ frac{x}{2} }=6^{2} 6^{ frac{x}{2} }=6^{2}](https://tex.z-dn.net/?f=6%5E%7B+frac%7Bx%7D%7B2%7D+%7D%3D6%5E%7B2%7D)
![frac{x}{2}=2, x=4 frac{x}{2}=2, x=4](https://tex.z-dn.net/?f=+frac%7Bx%7D%7B2%7D%3D2%2C+x%3D4+)
4)![(0.3)^{x^{2}} > (0.09)^{2x} (0.3)^{x^{2}} > (0.09)^{2x}](https://tex.z-dn.net/?f=%280.3%29%5E%7Bx%5E%7B2%7D%7D+%26gt%3B+%280.09%29%5E%7B2x%7D)
![(0.3)^{x^{2}} > (0.3)^{4x} (0.3)^{x^{2}} > (0.3)^{4x}](https://tex.z-dn.net/?f=%280.3%29%5E%7Bx%5E%7B2%7D%7D+%26gt%3B+%280.3%29%5E%7B4x%7D)
![x^{2}<4x x^{2}<4x](https://tex.z-dn.net/?f=x%5E%7B2%7D%26lt%3B4x)
![x^{2}-4x<0 x^{2}-4x<0](https://tex.z-dn.net/?f=x%5E%7B2%7D-4x%26lt%3B0)
![x(x-4)<0 x(x-4)<0](https://tex.z-dn.net/?f=x%28x-4%29%26lt%3B0)
![0<x<4 0<x<4](https://tex.z-dn.net/?f=0%26lt%3Bx%26lt%3B4)
5)![3^{ frac{x+1}{x} } < 3^{2} 3^{ frac{x+1}{x} } < 3^{2}](https://tex.z-dn.net/?f=3%5E%7B+frac%7Bx%2B1%7D%7Bx%7D+%7D+%26lt%3B+3%5E%7B2%7D)
![frac{x+1}{x}<2 frac{x+1}{x}<2](https://tex.z-dn.net/?f=frac%7Bx%2B1%7D%7Bx%7D%26lt%3B2)
![frac{x+1-2x}{x}<0 frac{x+1-2x}{x}<0](https://tex.z-dn.net/?f=frac%7Bx%2B1-2x%7D%7Bx%7D%26lt%3B0)
![frac{1-x}{x}<0 frac{1-x}{x}<0](https://tex.z-dn.net/?f=frac%7B1-x%7D%7Bx%7D%26lt%3B0)
![left { {{1-x<0} atop {x>0}} right left { {{1-x<0} atop {x>0}} right](https://tex.z-dn.net/?f=+left+%7B+%7B%7B1-x%26lt%3B0%7D+atop+%7Bx%26gt%3B0%7D%7D+right)
![left { {{x>1} atop {x>0}} right left { {{x>1} atop {x>0}} right](https://tex.z-dn.net/?f=left+%7B+%7B%7Bx%26gt%3B1%7D+atop+%7Bx%26gt%3B0%7D%7D+right)
![x>1 x>1](https://tex.z-dn.net/?f=x%26gt%3B1)
![left { {{1-x>0} atop {x<0}} right left { {{1-x>0} atop {x<0}} right](https://tex.z-dn.net/?f=+left+%7B+%7B%7B1-x%26gt%3B0%7D+atop+%7Bx%26lt%3B0%7D%7D+right)
![left { {{x<1} atop {x<0}} right left { {{x<1} atop {x<0}} right](https://tex.z-dn.net/?f=left+%7B+%7B%7Bx%26lt%3B1%7D+atop+%7Bx%26lt%3B0%7D%7D+right)
![x<0 x<0](https://tex.z-dn.net/?f=x%26lt%3B0)
6)![( frac{1}{3})^{ x^{2} -4x+3} geq 3^{1-x} ( frac{1}{3})^{ x^{2} -4x+3} geq 3^{1-x}](https://tex.z-dn.net/?f=%28+frac%7B1%7D%7B3%7D%29%5E%7B+x%5E%7B2%7D+-4x%2B3%7D++geq+3%5E%7B1-x%7D)
![3^{ -x^{2} +4x-3} geq 3^{1-x} 3^{ -x^{2} +4x-3} geq 3^{1-x}](https://tex.z-dn.net/?f=3%5E%7B+-x%5E%7B2%7D+%2B4x-3%7D++geq+3%5E%7B1-x%7D)
![-x^{2} +4x-3 geq 1-x -x^{2} +4x-3 geq 1-x](https://tex.z-dn.net/?f=-x%5E%7B2%7D+%2B4x-3++geq+1-x)
![-x^{2} +5x-4 geq 0 -x^{2} +5x-4 geq 0](https://tex.z-dn.net/?f=-x%5E%7B2%7D+%2B5x-4++geq+0)
![x^{2} -5x+4 leq 0 x^{2} -5x+4 leq 0](https://tex.z-dn.net/?f=x%5E%7B2%7D+-5x%2B4++leq++0)
![D=25-16=9 D=25-16=9](https://tex.z-dn.net/?f=D%3D25-16%3D9)
![x_{1} = frac{5-3}{2} = 1 x_{1} = frac{5-3}{2} = 1](https://tex.z-dn.net/?f=+x_%7B1%7D+%3D+frac%7B5-3%7D%7B2%7D+%3D+1)
![x_{2} = frac{5+3}{2} = 4 x_{2} = frac{5+3}{2} = 4](https://tex.z-dn.net/?f=+x_%7B2%7D+%3D+frac%7B5%2B3%7D%7B2%7D+%3D+4)
![1leq xleq 4 1leq xleq 4](https://tex.z-dn.net/?f=1leq+xleq+4)
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