Question

find the value of k for which roots of quadric equation are equal 4x^2 + 4x + k = 0​

Answer 1

Step-by-step explanation:

so 4x^2+4x+k=0 has equal roots

which means that

b^2-4ac=0

4^2-4×4k=0

Answer 2

Step-by-step explanation:

Given:Roots are equal.

⇒Δ=b

2

−4ac=0 where a=4,b=−4,c=k

⇒(−4)

2

−4×4×k=0

⇒16−16k=0

⇒16(1−k)=0

⇒1−k=0

∴k=1

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