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Re: algebra
by Ramesh gayakwad - Wednesday, 19 September 2012, 10:52 AM
  Hi Rahul,

Yes ans is 220 as follows.

P=5x^2 + 11y^2
put y=8-x
we will get

P=16x^2-176x+704

So P will have a minimum value.And that min value will be at x=(-b)/2a = 176/32 = 11/2
Putting x=11/2 we get y=5/2
put these values in P=5x^2 + 11y^2

We will get Pmin=220.

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