3 years ago

Expand the following : x(3x-)

Mathematics

1 answer:

Oduvanchick [21]3 years ago

6 0

Answer:

3x^2-x

Step-by-step explanation:

distribution of the x to the 3x and the -1

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How many roots does this has? x^2+(2√5x)+2x=-10 find Discriminant

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Given:

The equation is

$x^2+(2\sqrt{5})+2x=-10$

To find:

The number of roots and discriminant of the given equation.

Solution:

We have,

$x^2+(2\sqrt{5})x+2x=-10$

The highest degree of given equation is 2. So, the number of roots is also 2.

It can be written as

$x^2+(2\sqrt{5}+2)x+10=0$

Here, $a=1, b=(2\sqrt{5}+2), c=10$ .

Discriminant of the given equation is

$D=b^2-4ac$

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