How to factor it and by what

Mathematics

1 answer:

Maurinko [17]3 years ago

4 0

X^2 -5x -20=0
(x - 5/2)^2 -20 -25/4=0
(x-5/2)^2-105/4=0
(x -5/2 -(105)^1/2)(x -5/2 +(105)^1/2)=0
factors are (x -5/2 -(105)^1/2) and
(x -5/2 -(105)^1/2)

You might be interested in

5x - 7y = 58 Y= -x + 2 (that’s an negative x)

Harrizon [31]

The answers are:

x = 13
y = -11

4 0

2 years ago

Read 2 more answers

Helpp need this done ASAP

lorasvet [3.4K]

Number two is proportional just do Y over X y/x meaning divided all the y’s over the x’s so 25 divided by 5 30 divided by 6 35/7 40/8 they all equal 5 so it’s proportional
number three isn’t proportional when you do y/x they all come out differently so you do y2-y1 over x2-x1 16-4/4-2 16-4=12 4-2=2 then you divided 12/2 that equals 6 you do that again but with the next numbers but they don’t equal so it’s no equation no constant

7 0

2 years ago

Solve this inequality 5 x + 2 < 32

Hatshy [7]

Answer:

Here is your answer:

5x + 2 < 32

solution:

5x+ 2 < 32

or, 5x < 32-2

or, 5x < 30

or, 5x < 30/2

or, 5x < 15

or, x < 15/3

or, x < 5

therefore, x < 5 ans

Hope it will help you

7 0

3 years ago

( 3u + 7 )( 5 - u )= 0

mixas84 [53]

Answer:

The answer is 484. Please let me know if it helped you.

Step-by-step explanation:

5 0

3 years ago

Two algebra questions! please help :(

Fiesta28 [93]

The answer is B. h=V2πr2

8 0

3 years ago