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Anettt [7]
3 years ago
13

I need the quadratic formula.

Mathematics
1 answer:
Gre4nikov [31]3 years ago
3 0
ax²+bx+c=0
4a²x²+4abx+4ac=0
4a²x²+4abx=-4ac
4a²x²+4abx+b²=b²-4ac
(2ax+b)²=b²-4ac
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By using the remainder theorem, determine the remainder when
Greeley [361]

Answer:

-123

Step-by-step explanation:

The remainder theorem says that when a polynomial is divided by a linear factor x - c (note the minus sign), the remainder is the value of the polynomial at x = c.

When a polynomial P(x) is divided by x - c, the remainder is P(c).  In other words, to find the remainder, plug in c for x.

You're dividing by x + 4 which is the same thing as x - (-4) -- the role of c is being played by -4.

3(–4)^3 – (–4)^2 – 20(–4) + 5 = –123

3 0
3 years ago
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Make triangles and find the central angle
lubasha [3.4K]

Answer:

Step-by-step explanation:

It 14

3 0
3 years ago
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Natasha2012 [34]
144 million chocolate bars made in 9 days :)
6 0
2 years ago
BRAINLIEST <br>if -x = x -6 then x = <br>A. -6<br>B. -3<br>C. 0<br>D. 3<br>explain please​
Paul [167]

Answer:

D or 3

Step-by-step explanation:

The equation you are saying is

-x = x-6

If you move both x's to one side, you get

-2x = -6

From this, you can simplify by dividing by -2

x=3, or D.

Hope this helped!

5 0
3 years ago
Finish solving the system of equations –9.5x – 2.5y = –4.3 and 7x + 2.5y = 0.8 using the linear combination method.
trasher [3.6K]

Answer:

The value of x is 1.4 and y is -3.6

Step-by-step explanation:

The steps are :

- 9.5x - 2.5y =  - 4.3 -  -  - (1)

7x + 2.5y = 0.8 -  -  - (2)

(1) + (2)

- 9.5x + 7x - 2.5y + 2.5y =  - 4.3 + 0.8

- 2.5x =  - 3.5

x =  \frac{7}{5}  \: or \: 1.4

substitute \: x = 1.4 \: into \: (2)

7(1.4) + 2.5y = 0.8

9.8 + 2.5y = 0.8

2.5y =  - 9

y =  -  \frac{18}{5}  \: or \:  - 3.6

3 0
3 years ago
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