Question

*The price of one box is (a - 7) Rs. What is the total cost of (a + 7) boxes?*

1️⃣ ₹(a² - 14a + 49)
2️⃣ ₹(a² - 49)
3️⃣ ₹(a² + 14a + 49)
4️⃣ ₹(a² + 49)​

Answer 1

Answer:

the ans is 1st option

Step-by-step explanation:

hop this helped u

Answer 2

Answer:

correct option is 2

Step-by-step explanation:

Price of one box = (a-7) Rs

Total cost of (a+7) box = (a-7) (a+7) Rs

=a(a+7) -7(a+7)

$= {a}^{2} + 7a - 7a - 49$

$= {a}^{2} - 49$