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Brums [2.3K]
3 years ago
11

Simplify the following expression: 3x (7x-4)-(x-8)

Mathematics
2 answers:
maks197457 [2]3 years ago
7 0

Answer:

=21x^{2} -13x+8

Step-by-step explanation:

lisov135 [29]3 years ago
3 0

Answer:

=21x2−13x+8

Step-by-step explanation:

=3x(7x−4)+−1(x−8)

=3x(7x−4)+−1x+(−1)(−8)

=3x(7x−4)+−x+8

Distribute:

=(3x)(7x)+(3x)(−4)+−x+8

=21x2+−12x+−x+8

Combine Like Terms:

=21x2+−12x+−x+8

=(21x2)+(−12x+−x)+(8)

=21x2+−13x+8

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Use addition to solve the linear system of equations. Include all of your work in your final answer. \(\left\{ \right.\) 3x-y=6
ad-work [718]

Answer:

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

Step-by-step explanation:

We need to solve the linear system of equations.

3x-y=6 \\y=x-4

We can write second equation y=x-4  as: -x+y=-4

Let:

3x-y=6--eq(1)\\ -x+y=-4--eq(2)

Now, Adding equation 1 and 2

3x-y=6\\ -x+y=-4\\--------\\2x+0y=2\\2x=2\\x=\frac{2}{2}\\x=1

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So, we get y = -3

Solving the given linear system, we get x = 1 and y = -3.

The solution set is: (1,-3)

4 0
3 years ago
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Leto [7]

Answer:

c is answer of this question

7 0
3 years ago
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How to solve this: a 20 inch flat panel computer monitor is on sale for $ 249.99. it was reduced $ 80.00 from the original price
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Find the slope of the line through the pair of points a (2,-3) p(2,9)
Katarina [22]
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To determine the slope using two points lie on the line, we could use the following formula
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plug in the numbers
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