Simplify. assume no variable is 0.
#16-23
85 ! this is the jumbo

Step-by-step explanation:

Q16

First, we multiply the variable x together:

and remove brackets:

Now, we multiply the variable y:

Hence:

Use the rule

Thus,

Multiply:

Q17

Multiply the variable b together:

Multiply the variable c together:

Multiply.

Q18:

Divide the numerator and denominator by a:

Apply the rule that

Hence, the equation will be

which is finally

Q19:

Do the same rule said above:

Do the rule again:

Q20:

Cancel the common factor of 7:

Thus,

Cancel common factor of y^5

Q21:

Cancel the common factor which is 9:

"Move" the variable a up using the rule:

"Move" the variable b down using the rule:

"Move" the variable c up using the rule

Q22:

Use the rule:

Hence,

Q23:

Using the same rule above,

Therefore,