Question

यदि `x^(2)+y^(2)+1=2x` है तो `x^(3)+y^(5)` का मान ज्ञात करें।
A. 2
B. 0
C. -1
D. 1

Answer 1

Correct Answer - D
`x^(2)+y^(2)+1=2x`
`x^(2)-2x+1+y^(2)=0`
`(x-1)^(2)+y^(2)=0`
If `A^(2)+B^(2)=0`
[As powers are even it can possible only when `A=0` & `B=0`]
`:. x-1=0`
`x=1`
`y=0`
`:. x^(3)+y^(5)=1+0=1`