Question Completion Status: QUESTION 11 Find all values of the variable x for which the rational function is undefined. 2x +5 the expression is undefined when x = x2 - 15x + 50 O A. 5, 10 O B. 10, 5 O C. 6, 10 O D. 10, 6 QUESTION 12 How many fraction terms are there in the partial decomposition of x3 + x2+ 8 x (x-5)3 (x2+ 2x + 5)2 For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B I US Paragraph Arial 10pt P