Question

If x= 2√5 +√3 and y = 2√5-√3, evaluate x² + y²​

Answer 1

Answer:

the answer is 46.

hope it helps you.

Answer 2

Answer:

46

Step-by-step explanation:

given,

x = 2√5 + √3

y = 2√5 - √3

now,

x² + y²

= (2√5 + √3)² + (2√5 - √3)

= (2√5)² + 2 × 2√5 × √3 + (√3)² + (2√5)² - 2 × 2√5 × √3 + (√3)²

= 4×5 + 3 + 4×5 + 3

= 20 + 3 + 20 + 3

= 46