C. 32 D. 342 E.132 A quadratic equation with roots -3 and 5 is A.x2-15=0 B. x2-8x-15=0 C.x2+8x-15=0 D. x2+2x-15=0 E. x2-2x-15=0 A quadratic equation with solution set {13,14} is A.12x2=7x+1 B.12x2=7x-1

logx-22x2-10x+13 = 1; x=? A.-3 B.-52 C. 52 D. 25 E. 3 or52 If log2=m , then log85 =……… A. 1-m3m B.13m C. 3-mm D. 1-m3 E.3-mm 19.Solve logx×log12x+7 =1 A. 13 (or) -23 B. 25 (or) 23 C.-54 D.23 E. 23 ( or)