12.5,-10,-7.5,x; the mean is 11.5 find the value of X
1 answer:
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Try this solution, note, the suggested option is not the shortest way.
Answer:
Step-by-step explanation:
a trinomial that cannot be factored has no real roots.
here is one:
After graphing this trinomial has no intersections points with the x-axis wich means it has no roots
