(7 cm)*(10 cm) = 70 cm^2
The area is the product of length and width.
I assume the equation is supposed to be
Then we can write
Take the logarithm of base 3/8 on both sides:
- - -
If the equation is actually 
, I'm afraid it cannot be solved exactly.
Answer:
x +4
Step-by-step explanation:
The trinomial x² +8x +16 is a perfect square trinomial, so factors as ...
x² +8x +16 = (x +4)²
Assuming the side length is one of the factors of the given area, it will be ...
side length = (x +4)
