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2 years ago

2x^3+2x^2-19x+20=0 find the roots of the polynomial equation

Mathematics

1 answer:

Alenkinab [10]2 years ago

5 0

The answer is x=-4, (3±i)/2

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WILL GIVE BRAINLIEST What is the value of a in the problem 4a-3=D explain answer

mixas84 [53]

In this case, you aren't going to get an integer for the value of a, but you can rearrange the equation to equal a.

4a-3=D   add 3 to both sides
4a=D+3    divide both sides by 4
a=(D+3)/4   here's your answer

4 0

2 years ago

Gavin is thinking of a number.8 more than the product of 7 and the number is 120. find the number.

Marta_Voda [28]

<h3>The value of the number is equal to 16.</h3>

7x + 8 = 120

Subtract 8 from both sides.

7x = 112

Divide both sides by 7.

x = 16

3 0

2 years ago

Given the coordinates below, what is the midpoint of AB? A(-6, -10) B(2,5)

madreJ [45]

Given :

$\:$

A(-6, -10)
B( 2, 5)

$\:$

$\gray{ \frak{The \: given \: two \: \: points \: are(x_{1 },y_{1})=(−6 , -10)and(x_{ 2 },y_{2} )=( 2,5 )\:}}$

$\:$

Let's solve by using midpoint formula :

$\:$

$\bf \boxed{\color{red}\frak{Midpoint \: \: Formula : {( \: x ,\:y \: ) = }( \frak{ \frac{x_{1 } + y_{1}}{2} , \frac{x_{2 } + y_{2}}{2} )}}}$

$\:$

$\large \gray{ \frak{( \: x ,\:y \: ) = }( \frak{ \frac{ -6 + 2}{2} , \frac{ - 10 + 5}{2} )}}$

$\:$

$\: \large \gray{ \frak{( \: x ,\:y \: ) = }( \frak{ \frac{ -4}{2} , \frac{ - 5}{2} )}}$

$\:$

$\large \gray{ \frak{( \: x ,\:y \: ) = }( \frak{ \cancel\frac{ -4}{2} , \cancel\frac{ - 5}{2} )}}$

$\: \:$

$\underline{ \boxed{ \large \red{ \frak{option \: d }( \frak{ - 2, - 2.5)}}}}✓$

Hope Helps! :)

6 0

1 year ago

Does anyone know the answer to both these questions ???

gavmur [86]

answer for 9 is 6cm not sure about 10

5 0

1 year ago

anzhelika [568]

The answer is D as said above

8 0

2 years ago