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How were elements arranged on the early periodic table of elements? Please help me with this math!!? Help! what are the values that will make this undefined: (x+4)/(x2+2x-15). Answers: A. x= 3 or -5 B. -3 or 5 C. 3 or 5 D. -3 or -5? What is two equivalent lobes in orbital terms, and is there two in the p orbital? Given that mx2 + 3nx+4m=0 has equal roots, m and n are positive. find the ratio of m:n and solve the equation?