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Zarrin [17]
3 years ago
8

Solve the quadratic equations

Mathematics
1 answer:
Alexxx [7]3 years ago
6 0

Answer:

for quadratic equation 1

y^2-10y+21=0

Step-by-step explanation:

y^2-7y-3y+21=0

y(y-7)-3(y-7)=0

(y-7)(y-3)=0

y-7=0,y-3=0

y=7,y=3

y=(3,7)

for quadratic equation 2

16p^2-8p+1=0

16p^2-4p-4p+1=0

4p(4p-1)-1(4p-1)=0

(4p-1)twice=0

4p-1=0,4p-1=0

4p=1

p=1/4 twice

for quadratic equation 3

x^2-400=0

x^2=400

x=√400

x=20

for quadratic equation 4

-16m^2-8m-1=0

multiply the equation by -

16m^2+8m+1=0

16m^2+4m+4m+1=0

4m(4m+1)1(4m+1)=0

4m+1=0 twice

m=-1/4 twice

for quadratic equation 5

-3n^2+75=0

divide both side by -3

-3n^2/-3=-75/-3

n^2=25

n=√25

n=5

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Explore sums of complex
Charra [1.4K]

The two-point A and B will be -1+2i and -2+2i respectively.

<h3>What is the complex number?</h3>

A complex number is one that has both a real and an imaginary component, both of which are preceded by the letter I which stands for the square root of -1.

The complex number is given as;

x+iy

Where x is the real part and iy is the imaginary part.

The two points added to obtained -3 + 4i are;

A = -1+2i

B= -2+2i

The sum of the two points is;

⇒A+B;

⇒-1+2i + -2+2 i

⇒-3 + 4 i

Hence the two-point A and B will be -1+2i and -2+2i respectively.

To learn more about the complex number, refer to the link;

brainly.com/question/10251853

#SPJ1

8 0
2 years ago
AABC with vertices A(- 2, 3), B(3, - 3) , and C(- 2, - 3) is shown below.
kicyunya [14]

Answer:

ab= 7.8

ac= 6

bc=5

Step-by-step explanation:

4 0
3 years ago
1. An endpoint of a line segment is (4,5) and the midpoint of the line segment is (3,−2). Find the other endpoint.
Furkat [3]

Answer:

1. (2, -9) 2. (10, 10)

Step-by-step explanation:

7 0
4 years ago
At a lunch stand, each hamburger has 505050 more calories than each order of fries. if 222 hamburgers and 333 orders of fries ha
UNO [17]
Let hamburger = fries + 50

2hamburger + 3fries = 1700  **Given**
2(fries+50) + 3fries = 1700
2fries + 100 + 3fries = 1700
5fries = 1600
fries = 320
hamburger = 320 + 50
hamburger = 370 cal
4 0
3 years ago
Subtract these fractions:<br> 2/3 - 5/8
monitta

Answer:

1/24 ;  0.04166667

Step-by-step explanation:

2     5

/  -    /    = 5*3 / 8*3 = 16/24 - 15/24 = 16-15/24 = 1/24

3      8

8 0
4 years ago
Read 2 more answers
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