Question

simplify (2√3+√5)(2√3-√5)​

Answer 1

Answer:

Identity: (a + b)(a - b) = a² - b²

➞( 2√3 + √5 )(2√3 - √5)(2√3+√5)(2√3−√5)

➞(2√3)² - (√5)²(2√3)²−(√5)²

➞( 2² × √3² ) - ( 5)(2²×√3²)−(5)

➞( 4 × 3 ) - (5)(4×3)−(5)

➞ 12 - 512−5

➞ 7

Step-by-step explanation:

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