Math, asked by paarti5554, 2 months ago

X^5+x^4+1=0 find value of x

Answers

Answered by chetanagawande2006
1

Answer:

Correct option is

D

527

Given x+

x

1

=5

let y=x

4

+

x

4

1

x+

x

1

=5

Squaring on both sides

(x+

x

1

)

2

=5

2

⇒x

2

+

x

2

1

+2(x)(

x

1

)=25

⇒x

2

+

x

2

1

+2=25

⇒x

2

+

x

2

1

=23

Squaring on both sides

⇒(x

2

+

x

2

1

)

2

=23

2

⇒x

4

+

x

4

1

)+2(x

2

)(

x

2

1

)=529

⇒x

4

+

x

4

1

+2=529

⇒x

4

+

x

4

1

=527

⇒y=527

Thus, required term value is 527

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