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Harlamova29_29 [7]

2 years ago

11

What is the answer to F(x)=6+3x

1 answer:

masha68 [24]2 years ago

4 0

(F)=6+3F

We move all terms to the left:

(F)-(6+3F)=0

We add all the numbers together, and all the variables

F-(3F+6)=0

We get rid of parentheses

F-3F-6=0

We add all the numbers together, and all the variables

-2F-6=0

We move all terms containing F to the left, all other terms to the right

-2F=6

F=6/-2

F=-3

I don’t know if it is right but I hope this helps :)

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Solve 5x 2 - 7x + 2 = 0 by completing the square. What are the solutions?

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Answer:

$x=\frac{2}{5}$ or $x=1$

Step-by-step explanation:

The given quadratic equation is

$5x^2-7x+2=0$

Group the constant terms on the right hand side.

$5x^2-7x=0-2$

$5x^2-7x=-2$

Divide through by 5.

$x^2-\frac{7}{5}x=-\frac{2}{5}$

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$x^2-\frac{7}{5}x+\frac{49}{100}=-\frac{2}{5}+\frac{49}{100}$

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Take the square root of both sides;

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$x-\frac{7}{10}=\pm \frac{3}{10}$

$x=\frac{7}{10}\pm \frac{3}{10}$

$x=\frac{7-3}{10}$ or $x=\frac{7+3}{10}$

$x=\frac{4}{10}$ or $x=\frac{10}{10}$

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