Answer:
The answer is x²-9x+16
Step-by-step explanation:
P=156 cm
l=6+5w
P=2(l+w)
156=2(6+5w+w)
156=2(6+6w)
156=12+12w
12+12w=156
12w=156-12
12w=144
w=12cm
l=6+5•12
l=6+60
l=66cm
Refer to the pic above.
Concepts used :
1. Trigonometric Properties
2. Domain limitation
3. assumption
7 and 2 cannot be the lengths as on a triangle they're two equal side so two 3s or two 5s
I believe it would be the second option....