Question 1200710
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Factor the given quadratic expression:<br>
{{{x^2-144<0}}} --> {{{(x-12)(x+12)<0}}}<br>
The expression is EQUAL to 0 only at x=12 and x=-12.  Since the graph of the quadratic expression is an upward-opening parabola, the interval on which the expression is less than 0 is between x=-12 and x=12.<br>
ANSWER: (-12,12)<br>