(Зх-1)(х+3)=х (1+6х)

Question

(Зх-1)(х+3)=х (1+6х)

Answer 1

(3х-1)(х+3)=х(1+6х)
3х²+9х-х-3=х+6х²
3х²+8х-3-х-6х²=0
-3х²+7х-3=0
√Д=√7²-4×-3×-3=√13
х1=(-7-√13)/-6
х2=(-7+√13)/-6