Question

Find the value of (49)^2 using identities

Answer 1

hey here is ur ans .....


( 49 ) ^2
= (50-1 ) ^2


$(a - b) ^{2} = {a}^{2} - 2ab + {b}^{2}$
$= ( {50}^{2} ) - 2 \times 50 \times 1 + ( {1}^{2} )$
$= 2500 - 100 + 1$
$= 2500 - 101$
$= 2399$
hope it will help uh ..
nd plz mark as brainliest ...

Answer 2

49² = 2401

Given :

The expression 49²

To find :

The value of the expression

Formula :

(a - b)² = a² - 2ab + b²

Solution :

Step 1 of 2 :

Write down the given expression

The given expression is 49²

Step 2 of 2 :

Find the value of the expression

We use the formula (a - b)² = a² - 2ab + b²

$\sf {49}^{2}$

$\sf = {(50 - 1)}^{2}$

$\sf = {(50 )}^{2} - 2 \times 50 \times 1 + {(1)}^{2}$

$\sf = 2500 - 100 + 1$

$\sf = 2400 + 1$

$\sf = 240 1$

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