One number is 5 more than another. The difference between their squares is 155.

label Algebra
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One number is

5
more than another. The difference between their squares is
155
. What are the numbers?
Jun 14th, 2015

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dear i think there is some missing part i the question please 

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Jun 14th, 2015

oh i didnt see upper part.please wait for while i'll provide the best answer for you

Jun 14th, 2015

lets get two numbers as X and Y

then

X=y+5---------(1)

X^2-Y^2=155-----------------(2)

from (1) substitute in (2)

(y+5)^2-Y^2=155

Y^2+10Y+25-Y^2=155

10y=130

y=13


from (1)

x=y+5

x=13+5

x=18


so two numbers are 13 and 18


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Jun 14th, 2015

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