A_CDEFG
JO BHI BLANK KA ANSWER DEGA USKO MELEGE 58 POINTS LOOT LO POINTS
Answers
Explanation:
Answer:
k = 2 or -1/2
Step-by-step explanation:
Δ = 1/2| x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃ ( y₁ - y₂) |
=> 1/2| (k+1)(3-2k) + (2k+1)(2k-1) + (2k+2)(1-3)| = 0
=> 1/2| 3k + 3 - 2k² - 2k + 4k² - 1 - 4k - 4|
=> 1/2| 2k² - 3k -2| = 0
=> 2k² - 3k - 2 = 0
=> 2k² - 4k + k - 2 = 0
=> 2k(k - 2) + 1(k - 2) = 0
=> (k - 2)(2k + 1) = 0
=> k = 2 or -1/2
Answer:
k = 2 or -1/2
Step-by-step explanation:
Δ = 1/2| x₁(y₂ - y₃) + x₂(y₃ - y₁) + x₃ ( y₁ - y₂) |
=> 1/2| (k+1)(3-2k) + (2k+1)(2k-1) + (2k+2)(1-3)| = 0
=> 1/2| 3k + 3 - 2k² - 2k + 4k² - 1 - 4k - 4|
=> 1/2| 2k² - 3k -2| = 0
=> 2k² - 3k - 2 = 0
=> 2k² - 4k + k - 2 = 0
=> 2k(k - 2) + 1(k - 2) = 0
=> (k - 2)(2k + 1) = 0
=> k = 2 or -1/2
THANKS
Explanation: