Math, asked by YTRAMWNDEEP1111, 1 year ago

solve quesrion number 18

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Answered by harrineananthtoutz8u
0

x^2+1/x^2=66

x^2+1/x^2+2*x*1/x=66

x^2-1/x^2+2=66

x^2-1/x^2=64

x-1/x=8

x^3-1/x*3=(x-1/x)(x^2+1/x^2+x*1/x)

             =(8)(64+1)

              =73


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