If x + 1 upon x=3 . Calculate x square+1 upon x square,x cube +1 upon x cube,x to power 4 +1 upon x power 4
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Answered by
19
Answer:
i) x²+1/x² = 7
ii) x³+1/x³ = 18
iii) x⁴ +1/x⁴ = 47
Explanation:
x + 1/x = 3 ----(1) [given ]
i) x²+1/x² = (x+1/x)² - 2
= 3² -2
= 9 -2
= 7 ---(2)
ii) x³+1/x³ = (x+1/x)³+3(x+1/x)
= 3³ - 3×3
= 27 - 9
= 18 ---(3)
iii ) x⁴ + 1/x⁴ = (x²+1/x²)² -2
= 7² -2
= 49 -2
= 47
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Answered by
8
Answer:
this annswer is complete in both question.
1&2 part are in 1st page &3rd part is in 2nd page
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