Question

Heyy gyus plss tell me were is my solution wrong ...


The correct Ans of this ques is -1/2,1

Answer 1

Answer:

Your mistake is c=1 instead of c=k

Step-by-step explanation:

• (3k+1)x²+2(k+1)x+k=0

a=3k+1, b=2(k+1), c=k

D=b²- 4ac

• D=4(k+1)²-4(3k+1)k
• =4k²+8k+4-12k²-4k
• = -8k²+4k+4
• = -4(2k²-k-1)
• = -4((k-1)(2k+1)

If D=0 then k=1 and k= -1/2