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= (-(-5/2)^2 - 2*3/2
= 25/4 - 3
= 3 1/4
faktor
(x - 1) (2x - 3) = 0
x1 = 1
x2 = 3/2
nilai X1^2 + X2^2
jadi, 1^2 + 3/2^2
= 1 + 9/4
=( 4+9) / 4
= 13/4
= 3
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