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3 years ago

(4x^2-8xy+2y^2)-(9x^2-4xy-7y^2)

Mathematics

1 answer:

ra1l [238]3 years ago

4 0

Answer:

-5x^2-4xy+9y^2

Step-by-step explanation:

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Find all real solutions and show work: <br> 2x^3-3x^2+18x-27=0

Amiraneli [1.4K]

Given:

The given equation is

$2x^3-3x^2+18x-27=0$

To find:

All the real solutions.

Solution:

We have,

$2x^3-3x^2+18x-27=0$

It can be written as

$x^2(2x-3)+9(2x-3)=0$

$(2x-3)(x^2+9)=0$

Using zero product property, we get

$(2x-3)=0$ and $(x^2+9)=0$

$2x=3$ and $x^2=-9$

$x=\dfrac{3}{2}$ and $x=\pm\sqrt{-9}$

We know that $x=\pm\sqrt{-9}$ is an imaginary number because there is a negative sign under the square root.

Therefore, $x=\dfrac{3}{2}$ is the only real solution of the given equation.

5 0

3 years ago

Greatest common factor for 3,27, and 33

Georgia [21]

Answer:

it's 3.

Step-by-step explanation:

Here's why........3 only has 2 factors 1 and it's self and 3 times 9 is 27 and 3 times 11 is 33 they all have 3 as a factor.

7 0

3 years ago

Hi! I need help on this, make sure to label each part with A,B,C, and D so I don’t type it in wrong. I will fine brainlist

ivolga24 [154]

Answer:

Step-by-step explanation:

uh..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

7 0

3 years ago

Maggie’s brother is 3 years younger than twice her age. The sum of their ages is 18. How old is Maggie?

kykrilka [37]

Answer: Maggie is 7 years old.

7 . 2 = 14

14-3=11

11+7=18

Hope this helps!

6 0

3 years ago

Graph the line that goes through: (−2, 5) with a slope = −4

Shalnov [3]

Answer:

-1,1 0,-3

Step-by-step explanation:

start at -2, 5 and go down 4 right 1.

Rinse and repeat

5 0

3 years ago