The length of the base of the parallelogram is 22 cm.
Given:
Area = 396 cm²
height = 18 cm
Area of a parallelogram is computed by multiplying its base to its height.
A = bh
396 cm² = b * 18cm
396 cm²/18cm = b
22 cm = b
Option D:
is the product of the expression
Explanation:
The expression is 
We need to determine the product of the expression.
To determine the product of the expression, we need to simplify the given expression.
Thus, we have,

The term
is of the form 
Now, we shall use the identity,
Hence, we have,

Multiplying the terms and cancelling the common terms, we get,

Hence, the product of the given expression is 
Therefore, Option D is the correct answer.
I think you meant solve for x.
Step 1: Flip the equation.<span><span><span>5x</span>−6</span>=y</span>Step 2: Add 6 to both sides.<span><span><span><span>5x</span>−6</span>+6</span>=<span>y+6</span></span><span><span>5x</span>=<span>y+6</span></span>Step 3: Divide both sides by 5.<span><span><span>5x/</span>5</span>=<span><span>y+6/</span>5</span></span><span>Answer: x=<span><span><span>1/5</span>y</span>+<span>6/<span>5</span></span></span></span>
19 or 19/1
Hope this helped!