Square Roots and Cube Roots Questions

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

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

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

If 1-aa3+9 = 19 - a1-a3, then what is the value of a?

If the numbers  93, 204, 256 are arranged in ascending order, then the right arrangement is 

If 3a=4b=6c and a+b+c=279 then a2+b2+c2 is equal to

The cube of 997 is

Determine the value of 1r+1s when r3+s3=0 and r+s=6 ?