Question

root 5 minus root 8 whole square​

Answer 1

Answer:

( √5 - √8 )² = 13 - 2√40

Step-by-step explanation:

Formula to be known: ( a - b )² = a² - 2ab + b²

According to the given question, we are required to find: ( √5 - √8 )²

Applying the formula we get.

⇒ ( √5 - √8 )² = ( √5 )² - 2 ( √5 ) ( √8 ) + ( √8 )²

⇒ ( √5 - √8 )² = ( 5 ) - 2√40 + 8

⇒ ( √5 - √8 )² = 13 - 2√40

This is the required answer.

Answer 2

Solutions:

(√5 - √8)²

(a + b)² = a² + b² - 2ab

(√5 - √8)²

= (√5)² + (√8)² - 2(√5)(√8)

= 5 + 8 - 2√40

= 13 - 2√40

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