(|x+4|)=5 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
For every modulo expressions in the equation
allow cases, when this expressions ">=0" or "<0",
solve the resulting equation.
1.x+4≥0or
−4≤x∧x<∞we get the equation
(x+4)−5=0after simplifying we get
x−1=0the solution in this interval:
x1=12.x+4<0or
−∞<x∧x<−4we get the equation
(−x−4)−5=0after simplifying we get
−x−9=0the solution in this interval:
x2=−9The final answer:
x1=1x2=−9
Sum and product of roots
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