Answer:
k = - 2
Step-by-step explanation:
Given α and β are the zeros of x² - 6x + k = 0 , with
a = 1, b = - 6 and c = k , then
α + β = - = - = 6
αβ = = = k
Then solving
(α + β)² - 2αβ = 40
6² - 2k = 40
36 - 2k = 40 ( subtract 36 from both sides )
- 2k = 4 ( divide both sides by - 2 )
k = - 2
Hope this helps you finish your work!
Answer:
10 (D)
Step-by-step explanation:
do the Pythagorean theorem
Answer: b ) 65
Step-by-step explanation:
50 + 65 = 115
115-50 = 65