Answer:
28x^2+3x-18
Step-by-step explanation:
Formula: (a+b)(a+b) = a^2 + a*b + a*b + b*b
Following this: 28x^2 -21x +24x -18
Then you combine like terms: 28^2 +3x-18
hope this helped!! :)
The perimeter of the rectangle is given by the formulae,

Where

is the length and

is the width of the rectangle.
Now let us substitute into the formula,


The above expression corresponds to option
F.
Now when we expand the bracket, we obtain,

This also corresponds to option A.
The correct answers are
D to B =180
B to D=180
D to C =19
Answer:a
Step-by-step explanation:
X + 4 = 4x + 2
let’s put the x’s on one side and the numbers on the other
(whatever you do to one side, you have to do to the other)
x + 4 = 4x + 2
- 4 - 4x
x - 4x = 2 - 4
-3x = -2
—— ——
-3 -3
x = 2/3
to check this, we can put 2/3 in for x
(2/3) + 4 = 4(2/3) + 2
4 2/3 = 8/3 + 2
4 2/3 = 2 2/3 + 2
and there we can see both sides equal 4 and 2/3, making it true