\(3.\left(2^x-26\right)=18\\ 2^x-26=18:3\\ 2^x-26=6\\ 2^x=6+26\\ 2^x=32\\ 2^x=2^5\\ \Rightarrow x=5\)
\(\frac{2}{\left(x+1\right)\left(x+3\right)}+\frac{5}{\left(x+3\right)+\left(x+8\right)}+\frac{10}{\left(x+8\right)\left(x+18\right)}+\frac{1}{x+18}=\frac{5}{6}\)
Tìm x;y;z
Tìm nghiệm đa thức sau:
\(a.B\left(x\right)=\left(x+\frac{1}{2}\right).\left(x-3\right)\\ b.D\left(x\right)=x^2-x\\ c.E\left(x^3+8\right)\\ d.F\left(x\right)=2x-5+\left(x-17\right)\)
\(e.C\left(x\right)=x^2-9\\ f.A\left(x\right)=x^2-4x\\ g.H\left(x\right)=\left(2x+4\right).\left(7-14x\right)\)
\(h.G\left(x\right)=\left(3x-5\right)-\left(18-6x\right)\)
tìm số nguyên x biết: \(\dfrac{\sqrt{49}}{6}< \left|x-\dfrac{2}{3}\right|< -\dfrac{26}{\sqrt{81}}\)
Tìm số nguyên x biết
a) \(\left|x\right|< 2\frac{3}{4}\)
b) \(\left|x\right|>1\frac{3}{8}\)
c) \(\left|\frac{7}{6}\right|< \left|x-\frac{2}{3}\right|< \frac{26}{9}\)
Tìm Min hoặc Max:
A = \(\dfrac{2015}{18+12\left|x-6\right|}\)
B = \(\left|x+\dfrac{1}{3}\right|+\left|x-1\right|\)
Tìm x biết
1) \(\left(2x+3\right)\left(x-4\right)+\left(x-5\right)\left(x-2\right)=\left(3x-5\right)\left(x-4\right)\)
2)\(\left(8x-3\right)\left(3x+2\right)-\left(4x+7\right)\left(x+4\right)=\left(2x+1\right)\left(5x+1\right)-33\)
3)\(6x\left(3x+5\right)-2x\left(9x-2\right)+\left(17-x\right)\left(x-1\right)+x\left(x-18\right)-17x^2=0\)
4)\(\left(x-1\right)\left(x+2\right)-\left(x-3\right)+5x-7=0\)
Giúp mình nha. Camon nhiều
Tìm x biết : \(|2x-1|-3=\left(26+\frac{4}{2013}\right).\left(\frac{-34}{35}+\frac{2}{5}-\frac{3}{7}+1\right)\)
tim GTNN
\(P=\left(x+3y-5\right)^2-6xy+26\)
\(Q=\left(x-1\right)\left(x+2\right)\left(x+3\right)\left(x+6\right)\)
Tìm GTNN của:
\(C\left(x\right)=x^4-10\cdot x^3+26\cdot x^2-10\cdot x+30\)
