Given :
Length of one of the equal sides of an isosceles triangle = 3x+2
Then, length of the other equal side will also be = 3x+2
Length of the unequal side of this isosceles triangle = 14
Formula for finding the perimeter of an isosceles triangle :
[tex] = \tt side + side + side[/tex]
A formula for finding the perimeter of this isosceles triangle :
[tex] = \tt3x + 2 + 3x + 2 + 14[/tex]
Bringing all like terms together we get :
[tex] =\tt 3x + 3x + 2 + 2 + 14[/tex]
[tex] = \tt6x + 4 + 14[/tex]
[tex] \color{plum}\tt = 6x + 18[/tex]
Thus, the formula = 6x+18
Therefore, a formula to find the perimeter of this isosceles triangle = 6x+18
