Write the trinomial as a square of a binomial or as an expression opposite to a square of a binomial: -25a^2-1+10a
2 answers:
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Answer:
36 pencils
Step-by-step explanation:
Given
Cost Price = 180
Represent the number of items by x
This implies that the cost of each item is
Since all but 6 items were sold, the total selling price is:
This amount can be used to buy 30 more items.
So, we have:
Multiply both sides by 180
Expand brackets
Equate to 0
Expand
or
or
<em>Since, number of items can't be negative, we have to discard x = -210.</em>
Hence:
<em>We can then conclude that, Mr. Javier purchased 36 pencils</em>
Recall that