Question

(6x-5)^2+(3x-2)*(3x+2)>36

Answer 1

(6x-5)^2+(3x-2)*(3x+2)>36
36x^2-60x+25+9x^2-4-36>0
45x^2-60x-15>0   :15
3x^2-4x-1>0
3x^2-4x-1=0
д= 16+12=28
x= (4-+кор(28))/6