Question

if x-y=13 and xy=28, the value of x^2+y^2​

Answer 1

Answer:

140.5

Step-by-step explanation:

y = 13 - x

x- (13-x) = 0

2x=13

x=6.5

y=13 -6.5 = 6.5

x^2+y^2=(6.5)^2 + (6.5)^2 +2*28

=140.5

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Answer 2

Hope it helps........

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