Book Maths Puzzle Quadratic Equations

6X^6+x^3=15

solve for X

Read Solution (Total 1)

let x^3 = t then,
6t^2+t=15
=>6t^2+t-15=0
=>t=3/2 , t= -5/3
=> x= (3/2)^(1/3)and (-5/3)^(1/3)
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