if x+y=12 and xy=32,find the value of x square+y y square
Answers
Answered by
65
(x+y)2= x2 + y2 + 2xy
(12)2 = x2 + y2 + 2(32)
144 = x2 + y2 + 64
144 - 64 = x2 + y2
... x2 + y2 = 80
HOPE THIS HELPS!!!
note the 2 are in power
(12)2 = x2 + y2 + 2(32)
144 = x2 + y2 + 64
144 - 64 = x2 + y2
... x2 + y2 = 80
HOPE THIS HELPS!!!
note the 2 are in power
Joshuawoskk:
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Answered by
28
we have to find x²+y²
as x+y. =12
then (x+y)²=144
x²+y²+2xy=144
x²+y²+24=144
then x²+y²=120
as x+y. =12
then (x+y)²=144
x²+y²+2xy=144
x²+y²+24=144
then x²+y²=120
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