Which equation has a solution that has in an integer?

label Algebra
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2a+20=36

2a^2+20=36

8a+15=18

8a^2+16=18

Mar 13th, 2015

1.  a = 8

2. a = sqrt(8)

3.  a =  3/8

4.  a = sqrt(1/4)

The first equation has a solution that is an integer.

Mar 13th, 2015

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