Question

Simplify

(2√3+√5)(2√3 - √5)​

Answer 1

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✪QUESTION✪:-

Simplify

(2√3+√5)(2√3 - √5)

✪ANSWER✪:-

IDENTITY USED :-

$\boxed{\sf{(a+b)(a-b) = a²-b²}}$

➥(2√3+√5)(2√3 - √5)

➥(2√3)² - (√5)²

➥4×3 - 5

➥12 - 5

➥7

Answer 2

Answer:

7 is the required answer.

Step-by-step explanation:

here, we are using this identity→a²-b² = (a+b)(a-b)

⇒(2√3(2√3-√5)+√5(2√3-√5)

⇒(12-2√15)+(2√15-5)

⇒(12-2√15)+2√15-5)

⇒12-5=7

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