Answer:
(u+3)(u-3)
Step-by-step explanation:
u²-9 = u²-3²
a²-b²=(a+b)(a-b)
u²-3²=(u+3)(u-3)
Answer:
f(x) = 11 - x
Step-by-step explanation:
We have to find a function that has a graph as x + y = 11.
Now, the equation given is
x + y = 11
⇒ y = 11 - x
So, if we consider x as an independent variable and y as a dependent variable whose values are dependent on the values of x, then er can write y = f(x) = 11 - x
So, the function f(x) = 11 - x has the same graph as x + y = 11. (Answer)
Answer:
Option.B
Step-by-step explanation:
Its because if you add these two angles you get a supplementary angle or 180°
Using this we can form an equation to find the value of x.
(Hope this answer helps :))
(And is this question from Khan Academy?)
Answer:
13, 9, 0.75, 1/2, -0.75, -5, -7
-7, -5, -0.75, 1/2, 0.75, 9, 13
Step-by-step explanation:
Here is how you would work it out step by step.
You have to factor the equation you're given. (To check you factorization you can "FOIL" it and make sure it matches the original equation)
Then set the two answers you get from FOILing to zero and you should get your answers.