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Compact
A = \(\left(a+b+c\right)^2+\left(a+b-c\right)^2-2\left(a-b\right)^2\)
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Admin punish clearly.
D = (-2x3 - xy2) + (xy2 - 1) - (x2y - xy2 + 3x2)
Collapse D
Find x
\(\left(x-1\right)\left(2x-1\right)=9-x\)
\(2x^3+6x^2=x^2+3x\)
\(x^2-3x+2=0\)
Find x:
\(\dfrac{x-91}{37}+\dfrac{x-86}{42}+\dfrac{x-78}{50}+\dfrac{x-49}{79}=4\)
\(\left(3x-1\right)\left(x^2+2\right)=\left(3x-1\right)\left(7x-10\right)\)
\(\dfrac{2x}{5}-0,5x=\dfrac{1-2x}{4}+0,25\)
\(\dfrac{x}{3}-\dfrac{2x+1}{2}=\dfrac{x}{6}-x\)
Find \(x;y;z\)
\(\dfrac{12x-15y}{7}=\dfrac{20z-12x}{9}=\dfrac{25y-12z}{11}\)
and \(x+y+z=48\)
Compact:
\(\dfrac{x+1}{x-3}-\dfrac{1-x}{x+3}-\dfrac{2x\left(1-x\right)}{9-x^2}\)
Simplify the expression
Find \(x\in z\) for A \(\in z\)
\(\dfrac{2x-1}{x^2+x+1}-\dfrac{6}{x-1}\)
Calculate:
\(\dfrac{2}{x-1}+\dfrac{2x-1}{x^2+x+1}-\dfrac{x^2+6x+2}{1-x}\)
Calculate
A = \(\dfrac{x+1}{x-3}-\dfrac{1-x}{x+3}-\dfrac{\left(1-x\right)}{9-x^2}\)
Prove that:
x - x2 - 1 < 0 \(\forall x\)
\(\left(\dfrac{1}{2}x-3\right)\) = ?
Find x , y , z
a, \(\left(3x-5\right)^{2006}+\left(y^2-1\right)^{2008}+\left(x-z\right)^{2100}=0\)
(x+ 2y)2 + (2x - y)2 - (5x + y) . (x - y) - 10 . (y + 3) . (y - 3) = ?