Question

simlplify the expression (√5-√2)(√5+√2)​

Answer 1

Answer:

We know that (a+b)(a−b)=a

2

−b

2

=(

5

+

2

)(

5

−

2

)

=(

5

)

2

−(

2

)

2

=5−2

=3

Step-by-step explanation:

We know that (a+b)(a−b)=a

2

−b

2

=(

5

+

2

)(

5

−

2

)

=(

5

)

2

−(

2

)

2

=5−2

=3

Answer 2

Answer:

3

Step-by-step explanation:

(√5 + √2)(√5 - √2)

use identity (a² - b²) = (a+b)(a-b)

= (√5)² - (√2)²

= 5 - 2

= 3