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Basile [38]
3 years ago
15

Expand (x-2)^2 in polynomial form

Mathematics
1 answer:
Artyom0805 [142]3 years ago
3 0

Answer:

x^2 -4x +4

Step-by-step explanation:

(x-2)(x-2)

x^2 -2x -2x +4

x^2 -4x +4

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A2+(b−c); a=−8, b=17, c=21
JulsSmile [24]
You’re answer should be 60
8 0
3 years ago
Complete the equation of the line through (-8-2) and (-4-6)
Kisachek [45]

Answer:

Step-by-step explanation:

since you are given two points use the point- slope formula and the slope formula

y-y1 = m( x -x1)   and  m = y2 -y1 / x2 - x1        

find the slope m, 1st

p1 = (x1,y1)  given (-8,-2)

p2 = (x2,y2) given (-4,-6)

m = -6-(-2) / -4-(-8)

m = -6+2 / -4+8

m = -4 / 4

m = -1  :)

now use the slope you just found and the point-slope with either given point.. pick one.. which ever seems easier... they seem about the same to me

y - (-8) = -1(x-(-2))

y+8 = -1(x+2)

y+8 = -x-2

y = -x-2-8

y= -x-10

and your done :)

4 0
3 years ago
A rectangle is 12m longer than it is wide. Its perimeter is 68m. Write and equation and show steps to find its length and width.
Galina-37 [17]

Answer:

  length: 23 m; width: 11 m.

Step-by-step explanation:

The perimeter of a rectangle is twice the sum of its length and width, so that sum is 34 m. Then you can write two equations in length and width:

  l + w = 34

  l - w = 12

Adding these together gives you ...

  2l = 46

  l = 23 . . . . . . divide by 2

Then the width is

  w = 23 -12 = 11

The length and width are 23 m and 11 m, respectively.

4 0
3 years ago
Which equation represents a linear function?
Anna007 [38]

Answer:

y-2=-5(x - 2)

Step-by-step explanation:

Given:

The equations given are:

y-2=-5(x - 2)\\X+ 7 = -4(X + 8)\\y - 3 = y(x + 4)\\y + 9 = x(x - 1)

Now, a linear function is of the form:

y=mx+b

Where, 'm' and 'b' are real numbers and m\ne0

Equation 1: y-2=-5(x - 2)

Simplifying using distributive property, we get:

y-2=-5x+10\\y=-5x+10+2\\y=-5x+12

The above equation is of the form y=mx+b. So, it represents a linear function.

Equation 2: X+ 7 = -4(X + 8)

Here, both sides of the equation has same variable 'X'. So, it will form an equation of 1 variable. So, it's not a linear function.

Equation 3: y - 3 = y(x + 4)

Simplifying the above equation. This gives,

y-3=yx+4y\\y-4y-yx=3\\y(1-4-x)=3\\y(-3-x)=3\\y=\frac{3}{(-3-x)}

This is not of the form of the linear function. So, it is also not a linear function.

Equation 4: y + 9 = x(x - 1)

Simplifying the above equation. This gives,

y+9=x^2-x\\y=x^2-x-9

This is not of the form of the linear function. So, it is also not a linear function.

5 0
3 years ago
The ratio of the radii of two spheres is 2:5. The volume of the smaller sphere is 192 in3. What is the volume of the larger sphe
Evgen [1.6K]
Ratio of volumes is 2^3:5^3 or 8:125 192/V = 8/125 V = 3000 in^3
4 0
3 years ago
Read 2 more answers
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