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WINSTONCH [101]
3 years ago
6

Subtract and simplify.

Mathematics
1 answer:
wlad13 [49]3 years ago
3 0
Remove parantheses, subtract and solve using quadratic formulae

You might be interested in
(select all that apply)
Feliz [49]

The simplification of the expression (h² + 9·h - 1) × (-4·h + 3), involves the

multiplication of the terms. The error is therefore;

3. Calculating errors when distributing -1

<h3>How can the error in the calculation be found?</h3>

The expansion of (h² + 9·h - 1) × (-4·h + 3), is given as follows;

(h² + 9·h - 1) × (-4·h + 3) = -4·h³ + 3·h² - 36·h² + 27·h + 4·h - 3

Which gives;

-4·h³ - 33·h² + 31·h - 3

The calculation is therefore;

\begin{array}{|c|c|c|c|}&h^2&+9 \cdot h & -1\\-4 \cdot h&-4\cdot h^3&-36\cdot h^2 &4 \cdot h\\+3& 3 \cdot h^2&27 \cdot h&3\end{array}\right]

The error is therefore, in the distribution of the -1

The correct option is;

3. Calculating errors when distributing -1

Learn more about expansion of polynomial expressions here:

brainly.com/question/17255629

4 0
2 years ago
The quadratic functions f(x) and g(x) are described as follows:
mihalych1998 [28]

Given:

f(x) and g(x) are two quadratic functions.

f(x)=-8x^2-7

The table of values for the function g(x) is given.

To find:

The statement that best compares the maximum value of the two functions.

Solution:

We have,

f(x)=-8x^2-7

Here, the leading coefficient is -8 which is a negative number. So, the function f(x) represents a downward parabola.

We know that the vertex of a downward parabola is the point of maxima.

The vertex of a quadratic function f(x)=ax^2+bx+c is:

Vertex=\left(\dfrac{-b}{2a},f(-\dfrac{b}{2a})\right)

In the given function, a=-8,b=0,c=-7.

-\dfrac{b}{2a}=-\dfrac{0}{2(-8)}

-\dfrac{b}{2a}=0

Putting x=0 in the given function, we get

f(0)=-8(0)^2-7

f(0)=-7

So, the vertex of the function f(x) is at (0,-7). It means the maximum value of the function f(x) is -7.

From the table of g(x) it is clear that the maximum value of the function g(x) is 6.

Since 6>-7, therefore g(x) has a greater maximum value than f(x).

Hence, the correct option is C.

8 0
3 years ago
Read 2 more answers
What is the slope of the linear table below?
Luden [163]

Answer:

A

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 3, 8) and (x₂, y₂ ) = (0, 10) ← 2 ordered pairs from the table

m = \frac{10-8}{0+3} = \frac{2}{3} → A

3 0
3 years ago
4. You are paid $7.45/hr at your part-time job. Your deductions are FICA (7.65%), federal tax
Lunna [17]
Equal (4.80) that’s what that equals
3 0
4 years ago
Need help with this math problem.
timofeeve [1]

Answer:

3/1 or 3

Step-by-step explanation:

8 0
3 years ago
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