Question

Please answer !!!

Q】If m= -2 and n =2 ; Find value of :

1) m² + n² —2mn


Please answer in need ​

Answer 1

Step-by-step explanation:

Using m = -2 and n = 2 :

$\: \: \: \: \: \: {m}^{2} + {n}^{2} - 2mn$

$=( { -2)}^{2} + {(2)}^{2} - 2 \times ( - 2) \times 2$

$= 4 + 4 +8$

$= 8 + 8$

$= 16$

Answer 2

Answer:

But using m = -2 and n = 2

{m}^{2} + {n}^{2} - 2mnmn

−2×(−2)×2

= 4 + 4 +8=4+4+8

= 16=16