Question

Write full methord or the solution of these question

Answer 1

Step-by-step explanation:

Step-by-step explanation:

i) Given x = 7+√40

=> x = 7+√2×2×10

=> x = 7+2√10

=> x = 7+2×√5×√2

=> x = 5+2+2×√5×√2

=> x = (√5)²+(√2)²+2×√5×√2

=> x = (√5+√2)²

=> √x = √5+√2