6-x+(2x-1)²=4(x+3)²​

Question

6-x+(2x-1)²=4(x+3)²​

Answer 1

6-х+4х²-4х+1=4(х²+6х+9)

6-х+4х²-4х+1=4х²+24х+36

6-х-4х+1=24х+36

7-5х=24х+36

-5х-24х=36-7

-29х=29

х=-1