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Phoenix [80]
3 years ago
5

Hey plz help me out i need all workings a)x^2-4xy-12y^2 b)x^2+8x+12

Mathematics
2 answers:
Alenkinab [10]3 years ago
7 0
(x - 6y)(x + 2y) and (x + 6)(x + 2)

Sorry that I can't give working! :(
siniylev [52]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

(a)

Consider the factors of the coefficient of the y² term ( - 12) which sum to give the coefficient of the xy- term (- 4)

The factors are - 6 and + 2

since - 6 × 2 = - 12 and - 6 + 2 = - 4, hence

x² - 4xy - 12y² = (x - 6y)(x + 2y)

----------------------------------------------------

(b)

Consider the factors of + 12 which sum to give + 8

The factors are + 2 and + 6, hence

x² + 8x + 12 = (x + 2)(x + 6)

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The sum of three consecutive numbers is 12 find the numbers
snow_tiger [21]
Let x,y,z be those numbers.
x+y+z = 12
Since x,y,z are consecutive: y=x+1, and z = x+2
Let's replace y and z by their new values:
x+x+1+x+2=12
3x+3=12
You subtract 3 from each side to get variables on a side, and numbers on the other:
3x=9
You divide both sides by 3:
x=3

y=x+1 = 3+1 = 4
z=x+2 = 3+2 = 5

So the numbers are 3; 4 and 5.

You can re-check your answers (very important):
3+4+5 = 12
3;4;5 are consecutive numbers.
The answer has been approved.

Hope this Helps! :)
7 0
3 years ago
Round 254 212 610 to the nearest million
mafiozo [28]

Answer:

254,000,00

I hope this helps

6 0
3 years ago
Will give brainliestt
Natasha_Volkova [10]

Answer: (-5, -3)

Step-by-step explanation:

(-10, -6)

-10/2 = -5

-6/2 = -3

7 0
3 years ago
Please help me with this
aliya0001 [1]

Hey!

--------------------------------------------------------

a. Has a vertical axis of symmetry.

Answers: B and D

--------------------------------------------------------

b. Has a horizontal axis of symmetry.

Answers: D and E

--------------------------------------------------------

c. Passes through exactly one quadrant.

Answers: A and D

--------------------------------------------------------

d. Passes through all 4 quadrants.

Answers: B and F

--------------------------------------------------------

Hope This Helped! Good Luck!

7 0
3 years ago
What is the slope of the line?
Lelu [443]

Answer:

The slope is 2. (m=2).

Step-by-step explanation:

y+5=2x+2

y+5-5=2x+2-5

y=2x-3

Equation is y=2x-3.

y=y-intercept

x=slope

Hence, the slope is 2.

Hope this helps and stay safe!

8 0
3 years ago
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