Question

simplify it correctly in full process​

Answer 1

Answer:

6

Step-by-step explanation:

We will use an algebraic identity i.e. (a + b) (a - b) = a² - b²

(3 - √3) (3 + √3)

= 3² - (√3)²

= 9 - 3

= 6

Some more formulae :

• (a + b)² = a² + b² + 2ab
• (a - b) = a² + b² - 2ab
• (a + b) (a - b) = a² - b²

Thanks !

Answer 2

Answer:

$\Large6$

Step-by-step explanation:

$→\Large(3 - \sqrt{3} )(3 + \sqrt{3)}$

$→\Large \ {(3)}^{2} - { (\sqrt{3}) }^{2}$

$→\Large9 - 3$

$→\Large \green{ \boxed 6}$

Identity used -

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