the answer is -8<x<8.
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x2≤64
x2 ≥ 0 is one possible answer.
Yes - except in extreme cases. It can be the whole of the Real Numbers: eg x2 > -3 It can be a single point eg x2 ≤ 0 gives x = 0
Without further information, the only inequality is x2 ≥ 0 (assuming x is real). In the complex domain, there is no inequality.
9x2+x+64 9*64=576 To skip all this confusion, I graphed it and it does not have a solution. When you graph it, it should cross the x-axis. When it does, the two places that it does is the solution.