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3×X=19-4
3×X= 15
X=15%3
X=5
C) (2X+3)^2=81
(2X)^2 +2(2X)(3)+ 9^2=81
4(X)^2+ 12X +9- 81=0
4X^2 +12X- 72 =0
4X + 24=24x
X - 3=12X
(X+24)(X-3)
X=-24 X=3
D) 5X+ 4 =0
X=-4%5