Answer:
C. 4x+12
Step-by-step explanation:
To distribute, multiply 4 and x which gives you 4x and multiply 4x3 which equals 12 and 12 is positive so the answer is 4x+12.
Answer:
see explanation
Step-by-step explanation:
Calculate the distance (d) using the distance formula
d = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (6, 5) and (x₂, y₂ ) = (- 3, 1)
d = 
= 
= 
=
≈ 9.85 ( to 2 dec. places )
Factor out the common terms in the first two terms, then in the last two terms;
3x^2(b - 3x) - (b - 3x)
Factor out the common term b - 3x
<u>= (b - 3x)(3x^2 - 1)</u>
To complete the square (x+2/5)^2 it would be x^2+(4/5)x+4/25
Answer:
.
Step-by-step explanation:
Notice that the first two factors are in the form
, which is equal to
. Start by combining and expanding these two factors:
Let
.
.
.
This expression can now be expressed as
.
stands the unit imaginary number, where
. Unless
is raised to a certain power other than
, it can be treated just like a constant.
Expand this expression using FOIL:
.