The price of one box is (a-7)Rs. what is the tolhe cost of (a+7) boxes?
Answers
Answered by
1
Answer:
(a² - 49) rupees
Step-by-step explanation:
The price of one box is Rs (a-7).
∴ The total cost of (a+7) boxes = (a + 7) × (a -7) = a² - 7² = (a² - 49) rupees
Answered by
0
IDENTITY USED:
(a+b) (a-b) = a²–b²
Simply we will apply unitary method:
Cost × number of things
Cost = (a-7)
Total number = (a+7)
(a-7)(a+7)
(a)²-(7)²
a²-49
HOPE IT HELPS!!!
HAVE A NICE DAY!!!
Similar questions