Question

find the value of x (a+b) (a-b) = a²- b²
13x = (58)² - (45)²​

Answer 1

Answer:

103 is ur answer

Step-by-step explanation:

13x=(58)²-(45)²

13x=3,364-2,025

13x=1,339

x=1,339/13

therefor x=103

Answer 2

Given equation:

$13x=(58)^{2} -(45)^{2}$.

We know that, $a^{2} -b^{2}=(a+b) (a-b)$.

Here, $a=58$ and $b=45$.

$\implies 13x=(58+45)(58-45)$

$\implies 13x=(103)(13)$

$\implies 13x=103\times13$

$\implies 13x=1339$

$\implies x= \frac {1339} {13}$

$\implies x=103$.

Hence, the value of '$x$' in the given expression is $103$.