5.1×3x+5×3=41這道題怎麼求出解?

5.1×3x+5×3=41這道題怎麼求出解?


15.3x=41-15
15.3x=26
x=260/153



(3x 1)^2=6(3x 1)3
(3X+1)^2=6(3x+1)+3
不好意思沒注意到少了加號


(3X+1)²;= 6(3x+1)+39X²;+ 6X + 1 = 18X + 99X²;- 12X - 8 = 0(9X²;- 12X + 4)- 4 - 8 = 0(3X - 2)²;= 123X - 2 =±2√33X = 2±2√3X =(2±2√3)/ 3



3x-1.2=3.6


3x-1.2=3.6
3x=3.6+1.2
3x=4.8
x=1.6