39+(4х+3)^2=2+4(2х+1)^2
39 + 16x^2 + 24x + 9 = 2 + 4(4x^2 + 4x + 1)
48 + 16x^2 + 24x = 2 + 16x^2 + 8x + 2
48 - 2 - 2 = 16x^2 - 16x^2 + 8x - 24x
44 = -16x
11 = -4x
x = -11/4
x = 2 3/4
3(2х-1)+<span>5(3-x)=6х-3+15-5х=(6х-5х)-3+15=х+12=-1,5+12=10,5</span>
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