Answer:
Explanation:
find the perimeter of a shape given the lengths of its three sides in terms of x. The perimeter is the total distance around the boundary of a shape. To find the perimeter, we can use the following steps:
Add the lengths of the three sides: (x2−3x+9)+(x2+7x+13)+(2x2−x+8)
Simplify the expression by combining like terms: 4x2+3x+30
Write the answer with the appropriate units: The perimeter is 4x2+3x+30
units.