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Naddika [18.5K]
3 years ago
9

What is the difference of the two polynomials? (9x2 + 8x) – (2x2 + 3x)

Mathematics
2 answers:
Elan Coil [88]3 years ago
8 0

Answer:

(9x² + 8x) - (2x² + 3x)

= 7x² + 5x

Step-by-step explanation:

(9x² + 8x) - (2x² + 3x)

open the bracket

= 9x² + 8x - 2x² - 3x

collect like terms

= 9x² - 2x² + 8x - 3x

= 7x² + 5x

damaskus [11]3 years ago
7 0
(9x^2+8x)-(2x^2+3x)
9x^2+8x-2x^2-3x
7x^2+5x

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2x^2+5x+3/x^2-3x-4 divided by 4x^2+2x-6/x^2-8x+16
Masja [62]

Answer: \frac{x-4}{2x-2}

Step-by-step explanation:

\frac{2x^2+5x+3}{x^2-3x-4} divided by \frac{4x^2+2x-6}{x^2-8x+16} is the same thing as multiplying \frac{2x^2+5x+3}{x^2-3x-4} by \frac{x^2-8x+16}{4x^2+2x-6}.

The equation we get is:

\frac{2x^2+5x+3}{x^2-3x-4}*\frac{x^2-8x+16}{4x^2+2x-6}

With this equation, we can factor each equation:

\frac{(x+1)(2x+3)}{(x+1)(x-4)} *\frac{(x-4)(x-4)}{2(x-1)(2x+3)}

We can cancel out like terms since they would be dividing each other:

\frac{x-4}{2x-2}

8 0
3 years ago
Is the sequence arithmetic? 15, 14.5, 14, 13.5, 13,… If so, give the common difference.
scZoUnD [109]
The common difference is -0.5
8 0
3 years ago
Read 2 more answers
Janice scored 30% of the teams 50 points. How many points did Janice score?
Amiraneli [1.4K]

Answer:

The answer is 15.

Step-by-step explanation:

To find the percentage of something, you have to convert the percent to a decimal. 30 % as a decimal would be o.3. You would then multiply 0.3 by 50 which in turn, give you

15 points:)

8 0
3 years ago
Which equation represents a proportional relationship?
Aneli [31]
And which is the equation?
7 0
3 years ago
Line the slope and y-intercept to graph each equation below
Leno4ka [110]

Answer:

<h2>The graphs in the attachments.</h2>

Step-by-step explanation:

The slope-intercept form of an equation of a line:

y=mx+b

m - slope

b - y-intercept

We have the equations of the lines in the general form Ax + By + C = 0.

Convert to slope-intercept form:

8.

2x-2y+5=0                <em>subtract 2x and 5 from both sides</em>

-2y=-2x-5              <em>divide both sides by (-2)</em>

y=x+\dfrac{5}{2}

9.

y-3=0            <em>add 3 to both sides</em>

y=3

8.

To draw a line we need only two points. Choice any two x values ​​and calculate the y values.

for\ x=0\to y=0+\dfrac{5}{2}=\dfrac{5}{2}=2.5\to(0,\ 2.5)\\\\for\ x=-2\to y=-2+\dfrac{5}{2}=-2+2.5=0.5\to(-2,\ 0.5)

9.

y=3

It's a horizontal line.

8 0
3 years ago
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