Question

is it right.........​

Answer 1

Answer:

wrong

let

a=2 and b=3

${a}^{2}=4~ and ~{b}^{2}=9$

4-9= -5

And

$({2 - 3})^{2} = { - 1}^{2} = 1 \\ ({a - b})^{2} = {a}^{2} + {b}^{2} - 2ab$

Answer 2

Answer:

${a}^{2} - {b}^{2} = {(a - b)}^{2} \: is \: wrong.$

Suppose a = 10 and b = 1

${a}^{2} - {b}^{2} = {(10)}^{2} - ( {1})^{2}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 100 - 1$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 99$

$( {a - b})^{2} = ( {10 - 1})^{2}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = ( {9})^{2}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 81$

I think this answer helped you.