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3 years ago

Expand and simplify 2(5x - 1) - (2x - 5)

Mathematics

1 answer:

muminat3 years ago

7 0

2(5x-1)-(2x-5).

=10x-2-2x+5.

=10x-2x+5-2.

=8x+3.

Hope it helps.

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Answer:

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Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

1. You have that the quadratic formula is:

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}$

2. To solve the quadratic equation you must substitute the values. So, you have that:

Rewrite the equation:

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Then you have:

$x=\frac{-(-5)+/-\sqrt{(-5)^{2}-4(2)(-1)}}{2(2)}$

3. Therefore, you obtain the following result:

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$x_2=\frac{5-\sqrt{33}}{4}$ ≈-0.19

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