For 3Com that would mean a 3100 series or 3500 series phones. The 3100 series phones are for NBX and VCX phone systems and the 3500 series phones are for VCX only. Both are also SIP compliant.
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5x -2(x-2) = 6 -2(-3x-3) 5x -2x +4 = 6 +6x +6 (use the distributive property) 3x + 4 = 6x + 12 (collect terms) 4 = 3x + 12 (subtract 3x from both sides to get all x on one side) -8 = 3x (subtract 12 from both sides to get only x on one side) -8/3 = x (divide both sides by 3 to get x by itself)
Here you are :
2X2-3x+5=0
=> 4-3x+5=0; (2X2=4)
=> -3x+9=0; (4+5=9)
=> 9 = 3x; (-3x moved to the right-hand side and it became 3x)
=> 9/3=x; (3 moved to the right hand side, so it becomes 1/3, i.e 1/3X9= 9/3)
i.e. x=9/3
=> x=3
Hence x equals to 3.
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