Answer:
21 x 3.1 / 2 = 32.55
Step-by-step explanation:
<span>y = <span>x2 </span>+ 5x + 36
y = (<span>x2 </span>− 5x − 36)</span>
<span>y = (<span>x2 </span>− 9x + 4x − 36)</span>
<span>y = [x (x − 9) + 4 (x − 9)]</span>
<span>y = (x − 9)(x + 4)</span>
First of all, since all powers of x in this function are even, the entire function is even. Thus, using -x as input doesn't change the function. Thus, f(-x)=2x^2-4.
Answer:
The greatest common factor of the given expressions is

Step-by-step explanation:
Given that 
can be written as

can be written as

and
can be written as

Comparing the common factors we have
is the greatest common factor of 
Therefore the greatest common factor of the given expressions is
