exam
Maths Puzzle
Numerical Ability
Show that 3.6123 (has a line over 123) is a rational number by writing it as a fraction of integers
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exam Other Question
(x+1)(x+2)>x(x+1)=0
(x+1) (x+2)>(x+1)-x=0
2(x+1)>-x=0
-x=2
PLEASE HELP:
For the function defined by f(x)=5x-4, find a formula for f^-1(x).