Asked by BEN

x+y=28
x(y)=196
Answered by mathhelper
x+y=28 or y = 28-x
sub into the 2nd

x(28-x) = 196
28x - x^2 - 196 = 0
x^2 - 28x + 196 = 0
ahh, a perfect square,
(x - 14)^2 = 0
x-14 = 0
x = 14
then y = 28-14 = 14
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