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Kazeer [188]
3 years ago
15

How do you simplify -2x(x+3)-(x+1)(x-2)

Mathematics
2 answers:
Elena L [17]3 years ago
8 0
1. Distribute the -2x with the (x+3)
2.Multiply (x+1) and (x-2) which is (x2- x -2)
So far it should look like (-2x^2 -6x) - (x^2-x-2)
3. Distribute out the negative
Should look like this -2x^2 -6x - x^2+x+2
4. Lastly combine like terms

Your result should be:
-3x^2 - 5x + 2

Hope this helps!
Mumz [18]3 years ago
4 0

-2x(x + 3) - (x + 1)(x - 2)


//Distribute

= (-2x² - 6x) - (x² - 2x + x - 2)


// Combine like terms

= (-2x² - 6x) - (x² - x - 2)


// Open brackets

= -2x² - 6x - x² + x + 2


//Combine like terms

= - 3x² - 5x + 2

//Factorise

<span>= (1 - 3x)(x + 2)</span>


Answer:  (1 - 3x)(x + 2)


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The perimeter of a playing field for a certain sport is 174 ft. The field is a rectangle, and the length is 45 ft longer than th
Leno4ka [110]

Answer:

21 ft by 66 ft

Step-by-step explanation:

From the question,

P = 2(L+W)............... Equation 1

Where P = Perimeter of the playing Field, L = Length of the playing Field, W = width of the playing Field.

If the Length of the Field is 45 ft longer than the width,

L = 45+W............ Equation 2

Substitute Equation 2 into equation 1

P = 2(45+W+W)

P = 90+4W............. Equation 3

Given: P = 174 ft.

Substitute into equation 3

174 = 90+4W

4W = 174-90

4W = 84

W = 84/4

W = 21 ft.

Substituting the value of W into equation 2

L = 45+21

L = 66 ft.

Hence the dimensions of the playing field is 21 ft by 66 ft

3 0
3 years ago
Find the first three terms of f(n + 1) = f(n) + 8, if f(1) = 27.
dezoksy [38]
I hope this helps you



f (1+1)= f (1)+8


f (2)= 27+8


f (2)=35



f (2+1)= f (2)+8



f (3)= 35+8


f (3)=43



3 0
4 years ago
There are 1295 students attending a small university there are 714 woman in rolled what percentage of students are woman
MatroZZZ [7]

Answer:

Approximately 55% of enrolled students are women.

Step-by-step explanation:

To find the percentage of a given set of data, you need to divide the number of actual students by the total number of students.  In this case, they are wanting the percentage of just women students at the university:

\frac{women students}{total students} =\frac{714}{1295} x 100 = 55%


4 0
3 years ago
Use matrices to determine the coordinates of the vertices of the rotated figure. with vertices MNP M(-2, 6), N(7,1), and P (4,-3
ioda

Answer:

The coordinate of image triangle is M(-6,-2),N(-1,7) and P(3,4)

Step-by-step explanation:

7 0
3 years ago
Drag each tile to the correct location. Not all tiles will be used.
Novosadov [1.4K]

Answer:

25:64

Step-by-step explanation:

surface : 4×pi×R^2

R1 = 5x

R2 =8x

4piR1^2 / 4piR2^2 = R1^2/R2^2 = 5x^2/8x^2 = 25x^2/64x^2 = 25/64

4 0
3 years ago
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