Question

Simplify (7-√5)2by using identity

Answer 1

Answer:

54 - 14 root 5

Step-by-step explanation:

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

Therefore, answer is

54 - 14 root 5.

Answer 2

Answer:

$54 - 14\sqrt{5}$

Step-by-step explanation:

$(7-\sqrt{5}) ^{2}$

$=> 7^{2} - (2*7*\sqrt{5}) + \sqrt{5} ^{2}$

$=> 49 - 14 \sqrt{5} + 5$

$=> 54 - 14\sqrt{5}$