Question

If ign="absmiddle" class="latex-formula">=36 and xy= -7, findthe value of $x^{2}+y^{2}$

Answer 1

$(x + y)^2 = 36$

$x^2 + 2xy + y^2 = 36$

$x^2+ y^2 = 36 - 2xy = 36- 2(-7)= 36+14=50$

Answer: 50