Answers

2016-01-03T00:31:49+05:30
It is a single variable equation , i.e. 'x' is the variable ,

ax + b = 0

x = -b/a , where a & b are some constants
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2016-01-04T00:20:35+05:30
It mean u multiply a by x and b to it, u get zero.... means one of them is n ed gative number
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