0 votes 0 votes If $ax^{2}+bx+c= 0$ and $2a,b$ and $2c$ are in arithmetic progression, which of the following are the roots of the equation? $a,c \\$ $-a,-c \\$ $-\dfrac{a}{2},-\dfrac{c}{2} \\$ $-\dfrac{c}{a},-1$ Quantitative Aptitude cat2012 quantitative-aptitude quadratic-equations + – Chandanachandu asked Mar 5, 2020 • edited Mar 26, 2022 by Lakshman Bhaiya Chandanachandu 332 points 465 views answer comment Share See all 0 reply Please log in or register to add a comment.