SSC CHSL Model Paper 9

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Question : 34 of 100

Marks: +1, -0

If

x^2+ y^2 +2x + 1 = 0

, then the value of

x^31+y^35

is

-1
0
1
2

Solution:

x^2 + y^2 + 2x+1=0

⇒

x^2 + 2x+1+y^2 = 0

⇒

(x+ 1)^2 + y^2 = 0

⇒

x + 1 = 0 ⇒- 1

and

y =0

∴

x^31 - y^35 =-1

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