Answer:
x^2+8x+5=0
Step-by-step explanation:
Well, they all can be divided by 3. So it would be x^2+8x+5=0
As the triangles are similar so,
3/9 = 4/12 = 4.5/k
Taking 3/9 and 4.5/k Then
perimeter=2(l+w).
2(10+6)
2(16)
32cm.
b)2(8+6)
2(14)
28
c)2(11+10)
2(21)
42.
d)2(20+15)
2(35)
70.
2x-32
You would distribute the 4.