Question

for what values of K, the roots of the equation
2² +4x+k=0 are real!

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Answer 1

Answer:

k$\leq$2

Step-by-step explanation:

2x²+4x+k=0

as we know for real roots D$\geq$0

D$\geq$0

B²-4AC$\geq$0

4²-4×2×k$\geq$0

16-8k$\geq$0

16$\geq$8k

k$\leq$2