Square Roots and Cube Roots Questions

Which of the numbers given below is the square root of 14161?

The maximum value of 5+20x-4x2, when X is real number

65.The angles of elevation of an aeroplane flying vertically above the ground, as observed from the two consecutive stones, 1 km apart; are 45o and 60o. The height of the aeroplane from the ground is

If x+1x=-2,then the value of x7+1x7

Find the square root of 1485961

What is the square root of (√5 + 2)/(√5 – 2)?

What is the remainder, when 4x4 +10x3-20x2+90 is divided by (x+2) ?

Which of the following relation is CORRECT?

I. (√15 + √7) < (2√22)

II. (√17 + √5) < (√20 + √2)