Answer:
Step-by-step explanation:
36 d²-36 d+9=9(4d²+4d+1)
=9[4d²+2d+2d+1]
=9[2d(2d+1)+1(2d+1)]
=9(2d+1)(2d+1)
=9(2d+1)²
=[3(2d+1)]²
=(6d+6)²
length=6d+6
perimeter=4(6d+6)=24d+24
when d=2
length=6×2+6=18in
perimeter=4×18=72 in
area=18²=324 in²
Answer:

Step By Step Explanation:
Apply Exponent Rule 


Rewrite 84: 
Rewrite 24: 

Factor Out Common Term 

➤ 
Answer:
x=16 1/4
Step-by-step explanation:
is that a 11/2 or a 1 1/2? the answer i put was for 1 1/2