Question

X + Y is 12 x y is minus 14 find X square + Y square

Answer 1

$(x + y) {}^{2} = {x}^{2} + y { }^{2} + 2xy \\ {12 }^{2} = {x}^{2} + {y}^{2} + 2 \times - 14 \\ 144 = {x }^{2} + y {}^{2} - 28 \\ 144 + 28 = 172 = {x}^{2} + y {}^{2}$

Answer 2

I think it is right answer