Answer:
A
Step-by-step explanation:
The area of a square is A = s². So the area of this square is A = (2x+2)² = 4x² + 8x + 4.
The perimeter of the triangle is 4/3x + 4/3x+4/3x = 12/3x = 4x.
The difference between the two values is subtraction. Subtract the expressions and simplify.
4x² + 8x + 4 -4x = 4x² + 4x + 4
This expression is also equal to 3. Set it equal to 3 and solve for x.
4x² + 4x + 4 = 3
4x² + 4x + 1 = 0
Substitute a = 4, b = 4 and c = 1 into the quadratic formula.
The quadratic formula is
.
Substitute and you'll have: