18s^2-12st-30t^2
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factor out 6 you may want to see if this was copied ok if so use the quadradic forumula to find the roots.
Originally Posted by taemonique 18s^2-12st-30t^2 consider t is a constant try to guess it we need two numbers when we multiply them we get -15 and when add then we get -2 (-5,3) or treat t like a constant and use the general law so or
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