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(3x-2)²-5x-(3x+2)(3x-2)<(2-3x)²-9x²+4
9x²-12x+4-5x-9x²-6x+6x-4<4-12x+9x²-9x²+4
-12x-5x<8-12x
-12x-5x+12x<8
-5x<8 /:(-5)
x> - 1 3/5
b)
2(x-3)²-½≥(2x-3)(2x+3)-x
2(x²-6x+9)-½≥4x²+6x-6x-9-x
2x²-12x+18-½≥4x²-9-x
2x²-12x-4x²+x≥-9-18+½
-2x²-11x≥-26,5