Determinants Matrices Question 89

Question: If , then

Options:

A) $ f’(x)=0andf’’(x)=0 $ has one common root

B) $ f(x)=0andf’(x)=0 $ has one common root

C) sum of roots of $ f(x) $ =0 is $ -3a $

D) none of these

Show Answer

Answer:

Correct Answer: B

Solution:

  • [b] Applying $ C_1\to C_1+C_2+C_3 $ , we get Applying $ R_1\to R_1-R_2 $ and $ R_2\to R_2-R_3 $ , we get