Plzz help me in doing this
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since
(x-y)²=(x+y)²-4xy,
then
(x-y)²=(13)²-4×1,
(x-y)²=169-4,
(x-y)²=165,
then
(x-y)=√165
(x-y)²=(x+y)²-4xy,
then
(x-y)²=(13)²-4×1,
(x-y)²=169-4,
(x-y)²=165,
then
(x-y)=√165
Answered by
0
Hope it will help you.
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