Question

what is the formula of a minus b whole square

Answer 1

(a-b) ²=a²+b²-2ab..........

Answer 2

(a - b)² = a² - 2ab + b²

Given :

The expression (a - b)²

To find :

The formula

Solution :

Step 1 of 2 :

Write down the given expression

The given expression is

(a - b)²

Step 2 of 2 :

Find the formula

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

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

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

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

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

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