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(2x+3)(x-3)=0
2x=-3
x= -3/2
x=3
x1^2+x2^2= -3/4^2+3^2
= 9/12+9
=118/12
x = -6/5 atau x = 2
2. (2x + 3)(x - 3)
x1 = -3/2 x1 + x2 = -b/a = 3/2
x1 x x2 = c/a = -9/2
x2 = 3
(x1 + x2)^2 x 2(x1 x x2)
(3/2)^2 x 2(-9/2)
9/4 x -9 = -81/4
maaf hanya itu yang aku bisa