X=4+root of 15 find the value of x^3-1÷x cube
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Step-by-step explanation:
960×15^1/2- 1/960×15^1/2
x^3-1/x^3=x^3-1/x^3 identity
(x-1/x)(x2+1/x2+1)
(4×15^1/2 -1/4×15^1/2)(240+1/240+1)=
take product =
960×15^1/2-1/960×15^1/2
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