Question

Simplify (11 + √5)(11 − √5) by using the identity (a + √ )(a - √) =

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Answer 1

Question:—

Simplify (11 + √5)(11 − √5) by using the identity

Simplify (11 + √5)(11 − √5) by using the identity(a+b)(a-b) = a² - b²

$\huge{ \mathfrak{ \underline{ \underline{ \bold{ \color{blue}{♠Solution♠:—}}}}}}$

$\large{(11 + \sqrt{5} )(11 - \sqrt{5} )}$

$\large = {11}^{2} - ( { \sqrt{5} )}^{2}$

$\large \: = 121 - 5$

$\large{ \mathtt{ \bold{ \boxed{ \underline{ \color{blue}{ = 116}}}}}}$

Answer 2

Step-by-step explanation:

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