Question

*(k - 2/3)² = ?*

1️⃣ (k²- 4k/3 - 4/9)
2️⃣ (k² - 4/9)
3️⃣ (k²- 4k/3 + 4/9)
4️⃣ (k² + 4/9)​

Answer 1

*(k - 2/3)² = ?*

• 3️⃣ (k²- 4k/3 + 4/9)

Hope it helps.

Answer 2

Given : (k - 2/3)²

To Find :  विस्तार पुढीलपैकी कोणता  / which is expanded form

1️⃣ (k²- 4k/3 - 4/9)

2️⃣ (k² - 4/9)

3️⃣ (k²- 4k/3 + 4/9)

4️⃣ (k² + 4/9)​

Solution:

( a - b)²   = a²  - 2ab  + b²

(k - 2/3)²

a = k

b = 2/3

=> (k - 2/3)²  = k²  - 2k(2/3)  + (2/3)²

=>  (k - 2/3)²  = k²  - 4k/3  + 4/9

(k - 2/3)²  = k²  - 4k/3  + 4/9  is the correct answer

3️⃣ (k²- 4k/3 + 4/9)

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