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(x²-2x+2x-4)(x+3)-4x+10<(2-10x)2+(2x+6)(x+3)
x²+2x²+2x²-4x+3x²-6x+6x-12-4x-10<4-20x+2x²+6x+6x+18
x²+3x²-8x-2<2x²-8x+22
x²+3x²-2x²-8x+8x<2+22
x²+x²<24
2x²<24
x²<12/√
x<√12