(5х-2) все в квадрате-(х-1)все в квадрате

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Объяснение:

a_1+5d=4\\a_{11}=a_1+10d\\\\S_{11}=\frac{a_1+a_1+10d}{2}*11=\frac{2a_1+10d}{2}*11=\frac{2(a_1+5d)}{2}*11=\frac{2*4}{2}*11=44" class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=S_%7B11%7D%3D%5Cfrac%7Ba_1%2Ba_%7B11%7D%7D%7B2%7D%2A11%5C%5C%5C%5Ca_6%3D4%5C%5Ca_6%3Da_1%2B5d%3D%3Ea_1%2B5d%3D4%5C%5Ca_%7B11%7D%3Da_1%2B10d%5C%5C%5C%5CS_%7B11%7D%3D%5Cfrac%7Ba_1%2Ba_1%2B10d%7D%7B2%7D%2A11%3D%5Cfrac%7B2a_1%2B10d%7D%7B2%7D%2A11%3D%5Cfrac%7B2%28a_1%2B5d%29%7D%7B2%7D%2A11%3D%5Cfrac%7B2%2A4%7D%7B2%7D%2A11%3D44" title="S_{11}=\frac{a_1+a_{11}}{2}*11\\\\a_6=4\\a_6=a_1+5d=>a_1+5d=4\\a_{11}=a_1+10d\\\\S_{11}=\frac{a_1+a_1+10d}{2}*11=\frac{2a_1+10d}{2}*11=\frac{2(a_1+5d)}{2}*11=\frac{2*4}{2}*11=44">

1)

2) 1" class="latex-formula" id="TexFormula2" src="https://tex.z-dn.net/?f=6x-7%3C8x-9%5C%5C6x-8x%3C-9%2B7%5C%5C-2x%3C-2%5C%5Cx%3E1" title="6x-7<8x-9\\6x-8x<-9+7\\-2x<-2\\x>1">

3)

4) 5+4*(x-2)\\22-x>5+4x-8\\22-x>-3+4x\\-x-4x>-3-22\\-5x>-25\\x<5" class="latex-formula" id="TexFormula4" src="https://tex.z-dn.net/?f=22-x%3E5%2B4%2A%28x-2%29%5C%5C22-x%3E5%2B4x-8%5C%5C22-x%3E-3%2B4x%5C%5C-x-4x%3E-3-22%5C%5C-5x%3E-25%5C%5Cx%3C5" title="22-x>5+4*(x-2)\\22-x>5+4x-8\\22-x>-3+4x\\-x-4x>-3-22\\-5x>-25\\x<5">

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