Polynomials. If (x+y=12) and xy=32, find (x^2+y^2)

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If x+y=12 and xy=32, find x^2+y^2 Polynomials class 9. Class 9 polynomials important questions. #polynomials #polynomialsclass9 #polynomialsbyavisir #class9maths
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Комментарии
Автор

Fantastic and awesome explanation my all doubts are gone, Thanks for your beautiful explanation.

kishorilalsaini
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Sir fantastic explanation .thiz helped alot

h.r.muskan
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the way i did it was as following: if x+y=12 then x= 12-y, plunging that into the 2nd equation (xy=32) we get (12-y)y=32 which when simplified equals 12y-y^2=32 subtract 32 from both sides and you get 12y-y^2-32=0 and the 2 values for y will be the value of x and y when we solve the quadratic we find y = either 4 or 8. now 4^2+8^2=80

alozin
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bro its so easy, idk why i got confused lol, Thx sir

chaitanyab
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Nice explaining sir
You should make like these videos
videos
Please sir

ANANDSINGH-rklw
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Sir hame identity mila hai

(X+Y)sq.= Xsquare+2xy+Ysquare
Sir hamare formula ke identity me Xsquare and Ysquare alag hai aur aapne saath me likh diya

artforgalxay.
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