Question

If x = square root of 18, find value of (x^5+x^4)/x^3

Answer 1

x = √18 => 3√2

(x^5 + x^4)/x³

=> [(3√2)^5 + (3√2)⁴] / (3√2)³

after solving this we get,

[972√2 + 324]/54√2

=> (972√2/54√2) + (324/54√2)

=> 18 + 3√2

=> 3(6 + √2)