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Modulus Function

The solution ...

Question

The solution of the equation $| x | - 2 | x + 1 | + 3 | x + 2 | = 0$ is __________.

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Solution

after putting x= -2 the left hand is equal to right hand side
L.H.S = |-2|-2|-2+1|+3|-2+2|
= 0
= R.H.S

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