Question

Find m if (m-12) x² +2(m-12) x+2=0 as real and roots equal​

Answer 1

Answer:

Given,

equal and real roots ⇒b2−4ac=0

∴b2=4ac

a=(m−12),b=2(m−12),c=2

[2(m−12)]2=4(m−12)(2)

4(m−12)2=4(m−12)(2)

(m−12)2−2(m−12)=0

(m−12)(m−12−2)=0 

∴m=14,12