Answer:
87
Step-by-step explanation:
2x-4+4=6x+4-4x
2x=2x+4
c there is no solution
Perimeter = 6x² + 8x
Perimeter = 2(length + width)
perimeter = 2((x²+x)+(2x²+3x))
perimeter = 2(x²+2x² + x+3x)
perimeter = 2(3x² + 4x)
perimeter = 2*3x² + 2*4x
perimeter = 6x² + 8x
18.3