The price of on box is ( a - 7) Rs what is the total cost of ( a + 7) boxes
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Answered by
1
Answer:
a-7+7=a
Therefore , the total cost of (a+7)boxes is 'a'
Answered by
1
Answer:
PRICE OF 1 BOX= (a-7)
TOTAL COST OF (a+7) BOXES
= (a-7) (a+7)
= a(a+7)-7(a+7)
=a²+7a-7a+49
a²+49
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