(1) x = -1, y = 0 (3) x = 0, y = 1 ...
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(1) x = -1, y = 0 (3) x = 0, y = 1 (2) x = 1, y = 0 (4) x = 1, y = 1

JEE/Engineering Exams
Maths
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( left[begin{array}{cc}x & 1 -1 & -yend{array}right]+left[begin{array}{c}y 3end{array}right]=left[begin{array}{cc}1 & 2 2 & 1end{array}right] ) ( left.begin{array}{rc}2 & x+y & 2 2 & x-yend{array}right]=left[begin{array}{cc}1 & 2 2 & 1end{array}right] ) ( frac{x+y}{2 x}=2 Rightarrow(x=1) sqrt{y=0} )
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