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4 years ago

6 – 2x + 5 + 4x. how to simplify this

Mathematics

2 answers:

AysviL [449]4 years ago

8 0

Answer:

2x+11

Step-by-step explanation:

1) combine all like terms(terms with a variable and terms without one)

-2x+4x=2x

6+5=11

2x+11

hope this helps!

____ [38]4 years ago

5 0

Answer:

2x+11

Step-by-step explanation:

-2x+4x+5+6

2x+5+6

2x+11

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4 years ago

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4 years ago

Find the discriminant and the numbers of real roots for this equation: 4x^2+12x+9=0

Len [333]

Answer:

$D=0$

The quadratic equation has one real root with a multiplicity of 2.

Step-by-step explanation:

Given a quadratic equation:

$ax^2+bx+c=0$

You can find the Discriminant with this formula:

$D=b^2-4ac$

<em> </em>In this case you have the following quadratic equation:

$4x^2+12x+9=0$

Where:

$a=4\\b=12\\c=9$

Therefore, when you substitute these values into the formula, you get that the discriminant is this:

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Since $D=0$ , the quadratic equation has one real root with a multiplicity of 2 .

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3 years ago

6 – 2x + 5 + 4x. how to simplify this​

6 – 2x + 5 + 4x. how to simplify this