when x-> 7^- , isn't it - infinity because of (-3 x 7^2)??when x approaches to -, its negative and when x approaches to +, its positive, isnt it??

why x- 7^- is leading to infinity?? isn't it resulting negative infinity because of -3(7)^2?? Step 1/2 Prezi Calm Given function Get more benefits f(x) = = -3x2 x2 - 49 just for studying with us for vertical asymptotes solve x2 - 49 = 0 Seize the semester and start saving. x2 = 49 Your subscription includes all the best x = #7 study perks-on us. The vertical asymptotes are x = -7 and x =7 Activate now Explanation Calculated the vertical asymptotes by solving x2 - 49 = 0 My Textbook Solutions Step 2/2 Add textbook (b) Now to find the both left and right limits at x = -7 As X H -7 , f(x) H -0o = limx_-7-f(x) = limx--7- x1 49 - As XH -7+, f(x) 1 00 = limx--7f(x) = limx--7 72-49 = 00 Now to find the both left and right limits at x = 7 As X 1 7 , f(x) 1 00 = limx->7-f(x) = limx->7 72-49 = 00 As X H 7+, f(x) H -0o = limx-+7f(x) = limx->7 x2-49 =-00 Explanation Calculated the both left and right limits at x = #7 Final answer In Tha retinal amin and