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Nadya [2.5K]
3 years ago
7

What is the least common denominator of 7/x^2 7/5x explain

Mathematics
1 answer:
Usimov [2.4K]3 years ago
6 0
See the denomenators

x^2 and 5x

factor each
x^2=x*x
5x=5*x

lcd=5*x*x or 5x^2

the factions would be 35/5x^2 and 7x/5x^2
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3 years ago
Is the expression 2f + 4f + 2 – 3 equivalent to 6f – 1? 6f – 1 evaluated at f = 9 is 53. 2f + 4f + 2 – 3 evaluated at f = 9 is a
morpeh [17]
We have that

the expression 2f + 4f + 2 – 3-------> we can group it   (2f+4f)+(2-3)
(2f+4f)+(2-3)=(6f-1)
therefore
the expression [2f + 4f + 2 – 3] is equivalent to [6f-1]

if the expression [6f-1] for f=3 is 17
then
the expression [2f + 4f + 2 – 3] for f=3 is also 17

<span>let's check it
</span>[2*3 + 4*3 + 2 – 3]--------> [6+12+2-3]=[20-3]=17------> is ok
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