Question

0.2 find
m

if (m-12) x²+2 (m-12) x +2=0 has real
equal roots

Answer 1

Step-by-step explanation:

if equal roots then condition is b^2= 4ac

(2(m-12))^2= 4*(m-12)*2

4*(m-12)=8

m-12=2

m=12+2=14