Answer:
The dimensions of the desktop are (x+7) units by (x-7) units
Step-by-step explanation:
we know that
The difference of squares is equal to
we have
Remember that
substitute
Applying difference of squares
therefore
The dimensions of the desktop are (x+7) units by (x-7) units
we are given
Calculation of (f/g)(x):
now, we can plug values
now, we can simplify it
Domain:
we know that domain is all possible values of x for which any function is defined
function will be undefined when denominator =0
we are given sqrt function
and we know that value inside sqrt will always be greater than 0
so, domain will be
..............Answer
Answer: 200
Step-by-step explanation:
I dont have a wishlist
Answer:
The answer is 4r² – 9
Denise answer is correct.
Step-by-step explanation:
One of the methods of solving the given equation [(2r – 3)(2r + 3)] is the FOIL method
Using the FOIL method (Used for multiplying binomials)
F stands for first
O stands for outer
I stands for inner
L stands for last
In this method, it means we will first multiply the first terms followed by multiplying the outer term, then multiplying the inner terms and finally, the last terms.
So, for the equation (2r – 3)(2r + 3)
First : (2r)(2r) = 4r²
Outer : (2r)(+3) = 6r
Inner : (–3)(2r) = – 6r
Last : (–3)(+3) = – 9
Adding the results we get
4r² + 6r – 6r – 9 (+6r and – 6r cancels out)
= 4r² – 9
∴ (2r – 3)(2r + 3) = 4r² – 9
Hence, Denise answer is correct
6 + y × 9 (the x is a times sign btw)
