khushi
  • khushi
If x4 + px3 + rx + s2 is a perfect square then, ps = ____
Mathematics
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
is it X^4 + px^3 + rx + 2s??
anonymous
  • anonymous
and is that you in the picture?
khushi
  • khushi
yess but no 2s its s^2

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anonymous
  • anonymous
the answer is 'r'
anonymous
  • anonymous
its not
anonymous
  • anonymous
the answer is R, sorry
anonymous
  • anonymous
if u consider a quad eqn x^2 + ax + b and the then square it, you get x^4 + (2a)x^3 + (a^2 + 2b)x^2 + 2abx + b^2 if u compare the coefficients with ur own equation, p=2a s=b so ps = 2ab, which is equal to r in ur eqn (coeff of x) hence ps=r
anonymous
  • anonymous
@him1618: Great you got it 'right' this time :-)
anonymous
  • anonymous
no there were external pressures to deal with the first time i squared it
khushi
  • khushi
thank u @ him1618 n aash7sh
anonymous
  • anonymous
hey no probs ma'am
anonymous
  • anonymous
r u in india?

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