Question

az
For what values of m will the equation (m+1)x² +2(m+3)x+(m+8)=0 has equal
roots?​

Answer 1

Answer:

1/3

Step-by-step explanation:

$b {}^{2} - 4ac = 0$

$2 {}^{2} (m + 3) {}^{2} - (m + 1)(m + 8 )= 0$

$4m {}^{2} + 36 + 24m - (4m {}^{2} + 36m - 32) = 0$

$4m {}^{2} + 36 + 24m - 4m {}^{2} - 36m - 32 = 0$

$4 - 12m = 0$

$4 = 12m$

m=4/12=1/3