If x + y = 1 and xy = -12; find:x^2 - y^2. - Vidyadip

Question

If $x + y = 1$ and $xy = -12;$ find$:x^2 - y^2.$

✓

Answer

$x^2 - y^2$
$= (x + y) (x - y)$
$= (1) (±7)$
$= ±7.$

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