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in Algebra by (87.5k points)
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यदि `p^(3)+3p^(2)+3p=7` है तो `p^(2)+2p` का मान ज्ञात करें।
A. 4
B. 3
C. 5
D. 6

1 Answer

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Best answer
Correct Answer - B
`p^(3)+3p^(2)+3p=7`
`p^(3)+3p^(2)+3p+1=7+1`
`=(p+1)^(3)=(2)^(3)`
`=-p+1=2`
`implies p=1`
`:. p^(2)+2p=1+2=3`

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