Question

the eq x² - 8x + k =0 has real and distinct roots if...​

Answer 1

Answer:

k = 8

${b}^{2} - 4ac$

a = 1

b = -8

c = 8

D= --8 ^ 2 -- 4 × 1 × 8

D= 64 -- 32

D= 32

$d > 0$

so k = 8

Answer 2

b^2- 4ac>0

8^2- 4(1)(k)>0

64- 4k>0

k=16

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