Answer : The peter can buy 2 watches.
Step-by-step explanation :
Peter has total money = $100
Original price of a watch = $60
Discount % = 25 %
First we have to determine the price of a watch after discount.
Price of a watch =
Price of a watch after discount = Original price - Price of a watch at the time of discount
Price of a watch after discount =$60 - $15
Price of a watch after discount = $45
Now we have to determine the price of 2 watches.
Price of 2 watches = 2 × $45
Price of 2 watches = $90
From this we conclude that, peter can buy 2 watches because he has $100 money that is more than the price of 2 watches.
Thus, the peter can buy 2 watches.
We are given :
Step 1: factor the part inside square root
The function given inside square root is of quadratic form.
So let us try to factorise it using AC method.
Here A*C = 4*25 = 100
so we have to find factors of 100 that add up to give -20.
the two factors are -10 and -10.
Rewriting the function :
=
=
=
Step 2:
Now we take square root of the factorised form
=
Answer : (2x-5)