a, passes b, watches c, plays d, washes

Tìm x thỏa mãn cả 2 bpt
a,\(\dfrac{\left(x-3\right)^2}{3}-\dfrac{\left(2x-1\right)^2}{12}< x\)

b,\(2+\dfrac{3\left(x+1\right)}{3}< 3-\dfrac{x-1}{4}\)

Giai cac bpt sau

a,\(\left(2x+3\right)\left(x+1\right)< 0\)

b,\(\left(4-x\right)\left(x+2\right)>0\)

Giai cac bpt sau

a,\(\left(x+1\right)\left(2x-2\right)-3>-5x-\left(2x+1\right)\left(3-x\right)\)

b,\(\left(x-3^{ }\right)^2+4\left(2-x\right)>\left(x+7\right)\)

Giari các bpt sau

a,\(\left(x+2\right)^2+3\left(x+1\right)^2\ge4x^2-4\)

b,\(\dfrac{x-1}{2}-\dfrac{x-2}{3}\le x-\dfrac{x-3}{4}\)