Determine the area of the given figure:

Answer:
1.
A = LW
A = 5x(2x–7)
A = 10x²–35x
2.
A = s²
A = (2x+1)²
A = (2x+1)(2x+1)
A = 4x²+2x+2x+1 combine similar term
A = 4x²+4x+1