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3 years ago

. Show that square of any positive integer can not be of form 7q + 3 or 7q+5or 7q + 6, for any integer q

Mathematics

1 answer:

Svetradugi [14.3K]3 years ago

4 0

Step-by-step explanation:

7q + 3 or 7q+5 or 7q + 6

solve for q

7q + 3 =

7q + 3 -3 =-3

7q = -3

7q/7 = -3/7

q = -3/7

7q + 3 =

7q + 6 -6 =-6

7q = -6

7q/7 = -6/7

q = -6/7

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