a: \(\Leftrightarrow x^2+4x+4+3x^2+6x+3>=4x^2-4\)
=>10x+7>=-4
=>10x>=-11
hay x>=-11/10
b: \(\Leftrightarrow6\left(x-1\right)-4\left(x-2\right)\le12x-3\left(x-3\right)\)
=>6x-6-4x+8<=12x-3x+9
=>2x+2<=9x+9
=>-7x<=7
hay x>=-1
a: ⇔x2+4x+4+3x2+6x+3>=4x2−4⇔x2+4x+4+3x2+6x+3>=4x2−4
=>10x+7>=-4
=>10x>=-11
hay x>=-11/10
b: ⇔6(x−1)−4(x−2)≤12x−3(x−3)⇔6(x−1)−4(x−2)≤12x−3(x−3)
=>6x-6-4x+8<=12x-3x+9
=>2x+2<=9x+9
=>-7x<=7
hay x>=-1