Question

. (a-b)2 is equal to​

Answer 1

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Answer 2

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

Given :

The expression (a - b)²

To find :

The value of the expression

Solution :

Step 1 of 2 :

Write down the given expression

The given expression is

(a - b)²

Step 2 of 2 :

Find the value of the expression

$\sf {(a - b)}^{2}$

$\sf = (a - b)(a - b)$

$\sf = a(a - b) - b(a - b)$

$\sf = {a}^{2} - ab - ab + {b}^{2}$

$\sf = {a}^{2} - 2ab + {b}^{2}$

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