please help!!! - The price of an item has been reduced by $1.08. The new sale price is $98.75. What was the original price?
2 answers:
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Answer:
See the explanation below.
Step-by-step explanation:
Starting from
By putting we have:
The main rules that we use here are :
i)
for nonnegative values a and b.
ii)
.
Thus, first 'decompose' the numbers in the radicals into prime factors:
.
By rule (i) we write:
.
We can collect these terms as follows:
, and by rule (ii) we have:
Answer:
.
i)
ii)
Thus, first 'decompose' the numbers in the radicals into prime factors:
By rule (i) we write:
We can collect these terms as follows:
Answer: