Answer:
(X + 9)(x -9)
Step-by-step explanation:
Subtraction of perfect squares:
The factors of a subtraction of perfect squares is given by:
What are the factors of x² - 81?
This can be written as:
So
A keyboard that costs $475 is marked down 15%. what is the reduced price of the keyboard
2 answers:
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For this case we have the following system of equations:
We can write a system of equivalent equations.
For this, it is enough to multiply one of the two equations by a scalar.
Multiplying the equation 1 by 2, we have:
Therefore, the new system of equations is:
Answer:
A system that is equivalent is:
D)
The first thing we are going to do for this case is to rewrite the function correctly.
We have then:
For power properties we have:
Canceling similar terms we have:
Doing the calculations we have:
Answer:
The result of the expression is:
A 972
We have then:
For power properties we have:
Canceling similar terms we have:
Doing the calculations we have:
Answer:
The result of the expression is:
A 972