18x>0log(2)log(√3)x=2log(√3)x=4x=919x>0log(2)x=aa²-4a+3=0a1+a2=4 U a1*a2=3a1=1⇒log(2)x=1⇒x=2a2=3⇒log(2)x=3⇒x=820x>09lg²x-10lgx+1=0lgx=a9a²-10a+1=0D=100-36=64a1=(10-8)/18=1/9⇒lgx=1/9⇒x=
a2=(10+8)/18=1⇒lgx=1⇒x=1021x+3>0⇒x>-3x-1>0⇒x>1x∈(1;∞)log(4)(x+3)/(x-1)=log(4)2(x+3)/(x-1)=2x+3=2x-22x-x=3+2x=5222x-1>0⇒x>1/2x-9>0⇒x>9x∈(9;∞)lg√(2x-1)(x-9)=1√(2x-1)(x-9)=102x²-18x-x+9-100=02x²-19x-91=0D=361+728=1089x1=(19-33)/4=-3,5не удов услx2=(19+33)/4=13