Question

please answer these two questions to become brainliest​

Answer 1

1) (√5+√2)²

=>> 5 +2 + 2√10

=> 7 +2√10

2)(√5+√2)(√5-√2)

=>> 5 -2

=>>> 3

Answer 2

$\huge \bold{hey \: there}$

1) (√5+√2)²

➡We have an identity:

(a+b)²=a²+b²+2ab

So, (√5+√2)²=(√5)²+(√2)²+2(√5)(√2)

➡5+2+2(√10)

➡7+2√10

2) (√5-√2)(√5+√2)

➡ Another identity:

(a+b)(a-b)=a²-b²

Now,

(√5-√2)(√5+√2)=(√5)²-(√2)²

➡5-2

➡3