# Null points

Calculate the roots of the equation:

$3\mathrm{\mid }x+4\mathrm{\mid }+3\mathrm{\mid }x+5\mathrm{\mid }+2\mathrm{\mid }x+4\mathrm{\mid }=30$

Correct result:

number of roots:  2
x1 =  -8.13
x2 =  -0.63

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