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lana [24]
3 years ago
8

Factorise 4a^2+b^2-4ab-8a+4b+4​

Mathematics
1 answer:
Dima020 [189]3 years ago
6 0

Answer:

The factorized form of the given expression is  4 [(a-1)^2 - b(a - 1 + \frac{b}{4})]

Step-by-step explanation:

Given;

4a² + b²  -  4ab  -  8a +  4b   + 4

This expression is factorized as follows;

(4a²  -  8a  + 4)  +  (b² -  4ab + 4b)

(4a² - 4a - 4a + 4)  + b² - 4b(a - 1)

(4a - 4)(a - 1) + b² - 4b(a - 1)

(4a - 4)(a - 1) -  4b(a - 1) + b²

4(a - 1)(a - 1)   -  4b(a - 1) + b²

4(a - 1)²  - 4b(a - 1 + b/4)

4(a- 1)^2 - 4b(a - 1 + \frac{b}{4} )\\\\4 [(a-1)^2 - b(a - 1 + \frac{b}{4})]

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I need help i dont understand this
Ad libitum [116K]

The answer is B)x+y=y+x.

This is just changing the order of the numbers to get the same equation....\

So for example if I have 2+7 and I use the property of addition It would give me 2+7=7+2.

Pls mark brainliest if this helped!

7 0
3 years ago
More brinliest if its right :D im horrible at math
olga55 [171]

Answer:

No

Step-by-step explanation:

because the unit rate is 6 miles per hour for the first one and 10 miles per hour for the second

8 0
2 years ago
Read 2 more answers
Anyone know this if u do pls help and have a nice day
muminat
Because for input=-2 there are more than one outputs. It means the this is not a function and it’s impossible to find a rule.
8 0
3 years ago
Given directed line segment AB determine point X on the graph such that X partions the segment A to B in a ratio of 1:4 and give
Viktor [21]

Answer:

The coordinates of point X that divides the line in 1:4 are: (3,8/5)

Step-by-step explanation:

When a point divides a line with coordinates (x1,y1) and (x2,y2) in ratio m:n,

the coordinates of point are given by:

(x,y) = (\frac{mx_2+nx_1}{m+n} , \frac{my_2+ny_1}{m+n})

Given points are:

(x1,y1) = (5,1)

(x2,y2) = (-5,4)

Putting the values in the formula

X(x,y) = (\frac{(1)(-5)+(4)(5)}{1+4} , \frac{(1)(4)+(4)(1)}{1+4})\\= (\frac{-5+20}{5}, \frac{4+4}{5})\\=(\frac{15}{5}, \frac{8}{5})\\=(3,\frac{8}{5})

Hence,

The coordinates of point X that divides the line in 1:4 are: (3,8/5)

8 0
3 years ago
The original value of a car is $24,000. It depreciates 15% annually. What is its value in 4 years? $
ValentinkaMS [17]

Answer:

Future Value = $ 12528.15

Step-by-step explanation:

The depreciation is applied to the car annually. The value of the car after depreciation in "n" no. of years can be given by the following formula:

Future\ Value = (Present\ Value)(1-depreciation\ rate)^n\\

where,

Future Value = ?

Present Value = $ 24000

Depreciation Rate = 15% = 0.15

n = no. of years = 4

Therefore,

Future\ Value = (\$ 24000)(1-0.15)^4

<u>Future Value = $ 12528.15</u>

8 0
3 years ago
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