Write the value of lambda for which x square+4x +lambda=0 has equal roots
Answers
Answered by
12
4×4-lambda×4=0
lambda=4
lambda=4
Answered by
16
Answer:
4
Step-by-step explanation:
The formula when two roots of a quadratic equation are same-
b square - 4ac = 0
Here b=4 a=1 c= lambda
Therefore
16-4lambda=0
Or, lambda = 16/4= 4
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