Question

Simplify:
pls help. ​

Answer 1

Step-by-step explanation:

$( \sqrt{5 } - 2) ^{2}$

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

$(\sqrt{5} ) ^{2} - 2( \sqrt{5} )(2) + (2) ^{2}$

$5 - 4 \sqrt{5} + 4$

$9 - 4 \sqrt{5}$

Answer 2

Answer:

9 - 4√5

Step-by-step explanation:

Here we need to use the formula :

(a-b)²= a² -2ab + b²

(√5-2)²

= (√5)² -2 (√5)(2) + (2)²

= 5 - 4√5 + 4

= 9 - 4√5

Hope it helps u Army!!

Purple uh!!