|x|=3 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≥0or
0≤x∧x<∞we get the equation
x−3=0after simplifying we get
x−3=0the solution in this interval:
x1=32.x<0or
−∞<x∧x<0we get the equation
−x−3=0after simplifying we get
−x−3=0the solution in this interval:
x2=−3The final answer:
x1=3x2=−3
Sum and product of roots
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