Math, asked by vatsala15, 9 months ago

x square + 1 / x square=7 find x cubev+ 1/x square

Answers

Answered by Anonymous

1

x²+1/x²=7

(x+1/x)²-2=49

(x+1/x)=√51

(x+1/x)³=51√51

x³+1/x³+3(x+1/x)=51√51

x³+1/x³=51√51-21

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