Answer:
Expression:
Factorise the expression:
<u>Numerator:</u>
x^2 - 8 - 9
Find a pair of factors of c, that summed, make b. And decide whether the numbers are positive or negative.
1 * 9 = 9
-1 * 9 = -9
1 * -9 = -9
-1 * -9 = 9
1 + 9 = 10
1 - 9 = -8
-1 + 9 = 8
-1 - 9 = -10
The factors are
(x+1) and (x-9)
<u>Denominator</u>
5x^2 - 45x
Remove the factor here is visible - 5x.
Divide the expression by 5x.
5x(x - 9)
Both expressions have a common factor - (x - 9). This will cancel out.
Now you're left with:
(x+1)/5x
The domain is the set of numbers that the x value can be.
In an equation like
the domain is all real numbers because x can be any number.
In the case of
, any x value that is less than or equal to -4 will not work because you would be taking the square root of a negative number, which doesn't work unless you're graphing on a complex plane, which I assume you aren't.
Thus, the domain is
I hope that helps!
Answer:
D
Step-by-step explanation:
inverse just means opposite so if its shown dividing it first then adding, then the inverse is multiplying then subtracting
Answer:
im listening
Step-by-step explanation:
