-4x^2+13x+12>=0
Срочно плиз

4x²-13x-12≤0D=13²+4*4*12=169+192=361=19²x₁=(13-19)/8=-6/8=-3/4=-0.75x₂=(13+19)/8=44(x+0.75)(x-4)≤0x∈[-0.75; 4]