(6х-1)(6х+1)-(12х-5)(х+2)меньше 7-3х

Question

(6х-1)(6х+1)-(12х-5)(х+2)меньше 7-3х

Answer 1

36х^2-1-12х^2+24х-5х-10<7-3х<br>24х^2-18+22х<0<br>D=22^2+4×24×(-18)