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3 years ago

Can someone help me in this? a^2-ab-b-1

Mathematics

1 answer:

zheka24 [161]3 years ago

7 0

Answer:

(a + 1) (a − b − 1)

Step-by-step explanation:

I assume you're trying to factor the expression? If so, use quadratic formula to find the roots.

a = [ -(-b) ± √((-b)² − 4(1)(-b−1)) ] / 2(1)

a = [ b ± √(b² + 4b + 4) ] / 2

a = [ b ± (b + 2) ] / 2

a = -1 or b + 1

(a − (-1)) (a − (b + 1))

(a + 1) (a − b − 1)

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3 years ago

Help me with answering this question

Ksju [112]

Answer:

x-intercept is (-4,0) and the y-intercept is (0,-2

Step-by-step explanation:

There are 2 ways to find the y-intercept. One way is to put the equation in slope-intercept form. However, there is a more efficient way as well.

Another way to do it is to plug 0 in for x and y. The x-intercept will have the coordinate of (x,0). So to find the x-intercept you can plug in 0 for y and solve for x. To find the y-intercept do the opposite and plug 0 in for x.

So, first, plug 0 in for y

x+2(0)=-4
x+0=-4
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Then plug in 0 for x

0+2y=-4
2y=-4
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Therefore, the x-intercept is (-4,0) and the y-intercept is (0,-2).

6 0

3 years ago

A coordinate plane with a line passing through points (1, 2) and (4, 4)

Kobotan [32]

A straight line is represented by a linear equation given below.

The points are given as (1, 2) and (4, 4).

Start by calculating the slope (m)

$m=\frac{y_2-y_1}{x_2-x_1}$

So, we have

$m=\frac{4-2}{4-1} \\m=\frac{2}{3}$

<h3>What is the slope-intercept form of the line?</h3>

The equation in slope-intercept form is then calculated as:

$y=m(x-x_1)+y_1$

So, we have:

$y=\frac{2}{3}(x-1)+2\\ \\y=\frac{2}{3}(x-4)+4\\$

Expand

$y=\frac{2}{3}(x-1)+2\\ y=\frac{2}{3} x-\frac{2}{3}+2$

Take LCM

$y=2/3x+4/3$

Multiply through by 3

3y=2x+4

So, the possible equations are:

. $3y=2x+4\\y=\frac{2}{3}x+\frac{4}{3} \\y=\frac{2}{3}(x-1)+2\\y=\frac{2}{3}(x-4)+{4}$

To learn more about linear equations visit:

brainly.com/question/11897796

#SPJ1

8 0

1 year ago

Read 2 more answers

Create a sequence with a pattern rule of "add ." Sequence terms Create a sequence with a pattern rule of "multiply by ." Sequenc

Anuta_ua [19.1K]

Answer:

Firstly, to create a sequence we need our natural numbers which will stand for our n and the pattern created will be f(n). where n = 1, 2, 3, 4, . . .

1. If we have f(n) = n + 1, then our sequence would be 2, 4, 5, 6, . . . with a pattern of adding 1 to our n.

2. If we have f(n) = n x 2, then our sequence would be 1, 4, 6, 8, . . . with a pattern of multiplying 2 by our n.

3. If we have f(n) = n + 2 when n is odd and n - 1 when even, then we have 3, 1, 5, 3, . . . as our sequence following the add subtraction pattern.

4. if we have f(n) = n x 2 when n is odd and n/1 when n is even, then we have 2, 4, 10, 6, . . .

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3 years ago