Bradford T. answered 03/21/21
Tutor
4.9
(29)
Retired Engineer / Upper level math instructor
Appears to be a triangle:
Perimeter = 5x+6 + 6x-3 + 7x+2 = 18x+5
Area = Base•Altitude/2 = (5x+6)(4x+4)/2 = (20x2 +44x + 24)/2
= 10x2+22x+12