f. 5x - 2/-3 - 2x^2 -x/-2 > x(1-3x)/-3 - 5x/-4
Giải thích
f. 5x−2−3−2x2−x−2>x1−3x−3−5x−4
⇔−5x+23+2x2−x2>−x+3x23+5x4⇔4−5x+2+62x2−x12>4−x+3x2+3.5x12⇔−20x+8+12x2−6x>−4x+12x2+15x⇔−26x+8>11x⇔−37x>−8⇔37x<8⇔x<837
Vậy S=xx<837
f. 5x−2−3−2x2−x−2>x1−3x−3−5x−4
⇔−5x+23+2x2−x2>−x+3x23+5x4⇔4−5x+2+62x2−x12>4−x+3x2+3.5x12⇔−20x+8+12x2−6x>−4x+12x2+15x⇔−26x+8>11x⇔−37x>−8⇔37x<8⇔x<837
Vậy S=xx<837