The answer will be 18x, 3x times 2x is 6x
6x + 3x times 4 = 6x + 12x = 18x.
Answer:
false
Step-by-step explanation:
this is showing 2/-3
So you gotta use the AC method. What two numbers multiply to 4 and add to negative 5? It’s -4 and -1. Now you split up the -5 and then factor
I will show you how. 4x^2 -4x -1x +1
Now factor that —> 4x(x-1) -1 (x-1) see how there are two (x-1)?
We simplify it to (x-1)(4x-1) I took the two numbers of the outside and put them together. Now see that you multiply it out you get ur original unfactkred equation
<span>To use Law of Cosines, you need to know an angle and two sides.
The simplest case is if you know two sides (a and b) and the included angle (C)
c² = a² + b² − 2ab cos(C)
cos(A) = (b² + c² − a²) / (2bc)
cos(B) = (a² + c² − b²) / (2ac)
You can also use Law of Cosines if you know 2 sides (b and c), and non-included angle (C). We use first equation above, solving for a. Since the equation is a quadratic (with respect to unknown variable a), it is simpler to use Law of Sines in this case.
You can also use Law of Cosines if you know the 3 sides (a,b,c)
cos(A) = (b² + c² − a²) / (2bc)
cos(B) = (a² + c² − b²) / (2ac)
cos(C) = (a² + b² − c²) / (2ab)</span>
