Question

if a=2,b=3,then find the value of
${a}^{2} - ab - {b}^{2}$

Answer 1

2^2 - 2*3 - 3^2

= 4 - 6 - 9

= - 11.

Hope it's helpful to u.

Answer 2

$2 { }^{2} - 2 \times 3 - 3 {}^{2}$
$4 - 6 - 9$
$= 4 - 15$
$= - 11$
-11 that is the ans