Answer:
BC = 25
Explanation:
since this is an isosceles triangle AC = AB
2x+23 = 4x+1
subtract 2x from each side
2x+23 -2x = 4x+1-2x
23 = 2x+1
subtract 1 from each side
23-1 = 2x+1-1
22 = 2x
divide each side by 2
22/2 =2x/2
11= x
BC = 3x-8
BC = 3*11 -8
BC =33-8
BC = 25