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and 
in the same coordinate system and calculate the abscissas of the intersections of their graphs.
. Determine the number a so that 
will be the solution of the equation and find all the solutions of the equation.
and 
in the same coordinate system and calculate the abscissas of their intersections.
. The value of the expression 
is the same as the value of the expression 
for every 
x \in \mathbb{R}#2# is the value of this expression equal to 1?
