If x = 2 then the value of $$ x^3 + 27x^2 + 243x + 631$$ is:

Three positive numbers are in the ratio of 11 : 12 : 15. If the sum of the squares of those numbers is 1960, then the sum of the numbers is

Given that 10^0.48 = x, 10^0.70 = y and x² = y², then the value of z is close to

Find the value of a and b if (x-1) and (x+1) are factors of x⁴+ax³-3x²+2x+b

If a=34, b=c=33, then the value of a3+b3+c3-3abc is 

If a-6b = 3 then the value of a³-216b³-54ab is : 

If x⁴+2x³+ax²+bx+9 is a perfect square where a and b are positive real numbers, then the value of a and b 

If x+y=10 and xy=4, then what is the value of x⁴+y⁴=?