Find the value of 27x3 + 8y3, if(i) 3x + 2y = 14 and xy=8(ii) 3x + 2y = 20 and xy=

Q17 of 84 Page 4

Find the value of 27x³ + 8y³, if
(i) 3x + 2y = 14 and xy=8

(ii) 3x + 2y = 20 and xy=

(i) Using,

_{(ii) Using the identity, we get,}

If x+= 3, Calculate x² +, x³ +and x⁴+.

If x⁴+=194, find x³ +, x² +and x+

Find the value of 64x³ – 125z³, if 4x – 5z = 16 and xz=12.

If x-= 3+2 , find the value of x³ -.