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Anvisha [2.4K]
3 years ago
9

the first three steps of completing the square to solve the quadratic equation X2+4X-6=0 are shown below. what re the next 3 ste

ps
Mathematics
1 answer:
Vilka [71]3 years ago
3 0

Answer:

see the explanation

Step-by-step explanation:

<u><em>The complete question is</em></u>

The first three steps of completing the square to solve the quadratic equation x2 +4x -6= 0, are shown below.

Step 1: x2 +4x= 6

Step 2: x2 +4x+4=6+4

Step 3: (x +2)^2=10

What are the next 3 steps?​

we have

step 4

Take square root both sides

\sqrt{(x+2)^2} =\sqrt{10}

step 5

Simplify

x+2=\pm\sqrt{10}

step 6

Solve for x

subtract 2 both sides

x=-2\pm\sqrt{10}

x_1=-2+\sqrt{10}

x_2=-2-\sqrt{10}

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A company manufactures keyboards for desktop and laptop computers. The desktop keyboard contains 105 keys and the laptop keyboar
Luba_88 [7]

The company can produce 20 desktop keyboards and 10 laptop keyboards

Step-by-step explanation:

A company manufactures keyboards for desktop and laptop computers

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We need to find how much of each type the company can produce

Assume that the company can produce x desktop keyboards and

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∵ The company can produce x desktop keyboards

∵ company can produce y laptop keyboards

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∵ The laptop keyboard has 90 keys

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- Write an equation to represent the total keys

∴ 105 x + 90 y = 3000 ⇒ (1)

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Substitute x in equation (1) by equation (2)

∵ 105(2 y) + 90 y = 3000

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Learn more:

You can learn more about the system of equations in brainly.com/question/2115716

#LearnwithBrainly

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uysha [10]

Answer:

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Step-by-step explanation:

So it just looks like we need to use algebra to move everything around to get it in the form Ax + By = C

So, let's start with 9y = 12x + 0.2.  From standard form we have all terms wth variables on one side, so let's do that.  the right sie has both a variable term and non variable term, so let's get rid of the variable term.  The variable term is 12x, so to get rid of it you subtract 12x from both sides.

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To make it exactly in standard form just rarrnge.

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