1.

9*x^2 - 15*x %2B 6=0

Answer»

9x^2-15x+6=9x^2-6x-9x+6=0; 3x(3x+2)-3(3x+2)=(3x+2)(3×-3), 3x=-2, x=-2/3; 3x=3; x=3/3=1



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