plz answer this plzzzz
1. Simplify(2x-4y)(2x+4y+3)-4x+12y
4.Simplify
(20+3-1)x32
Answers
Answer:
Explanation:
So first you can set up your linear system to the following:
{
2
x
−
4
y
=
3
2
x
−
5
y
=
3
Do this because it is visually easier to simplify the next couple steps.
For the simplification part, I will be using the elimination method on the
x
variables so that we can obtain a
y
variable answer.
Multiply the top equation in the linear system by
−
1
−
1
(
2
x
−
4
y
=
3
)
2
x
−
5
y
=
3
You should get the following when simplified:
{
−
2
x
+
4
y
=
−
3
2
x
−
5
y
=
3
Next, add the equations together going vertically making sure to add only to the corresponding term.
The
x
values and the numerical values should be equal to
0
when this is done correctly and you should be left with the following:
−
y
=
0
Then simplify by dividing the
−
1
coefficient from
y
:
y
=
0
Then you plug the
y
value back into one of the original equations:
2
x
−
4
(
0
)
=
3
Then simplify:
2
x
=
3
Divide the
2
coefficient from the
x
and you should be just left with
x
=
3
2
=
1.5
Finally, you plug them into a coordinate point that indicates when the two equations intersect:
(
1.5
,
0
)
Answer:
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