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3 years ago

What is the difference of the polynomials? (m^2n^2-7)-(mn+4)

Mathematics

1 answer:

Vilka [71]3 years ago

4 0

Answer: The difference is,

$m^2n^2-mn-11$

Step-by-step explanation:

Given expression is,

$(m^2n^2-7)-(mn+4)$

By distributive property,

$m^2n^2-7-mn-4$

Combine like terms( that have the same variables and powers ),

$m^2n^2-mn-11$

Which is the required result.

Hence, option third is correct.

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Please help me with this question #20

Maurinko [17]

Answer:

answers C and D are both correct. (I consider D to be "simpler.")

Step-by-step explanation:

By the rules of exponents ...

(a^b)^c = a^(b·c)

Here, we have a=-3, b=2. c=3, so ...

((-3)^2)^3 = (-3)^(2·3) = (-3)^6

___

Consider further that ...

-3 = (-1)(3)

and another rule of exponents tells you ...

(a·b)^c = (a^c)·(b^c)

so our previous simplified result can also be written as ...

(-3)^6 = ((-1)·(3))^6 = (-1)^6·(3)^6 = 1·(3)^6 = (3)^6

_____

I find it hard to tell just how "simplified" your answer key may want the answer to be. Of course, the simplest possible form is 729.

6 0

3 years ago

Given that X = - 2 and y = 4 , Evaluate the expression. 5y – 4x

Kipish [7]

Answer: 28

Step-by-step explanation: 5(4)-4(-2) which is 20+8 and that is 28.

4 0

3 years ago

What is missing answer for brainiest

Elenna [48]

Answer:

The answer is 30

Step-by-step explanation:

The numerator is rising by 2, and the denominator is rising by 6

24 + 6 = 30

7 0

2 years ago

Please help me simplify the expression and please show work!!! <3

gizmo_the_mogwai [7]

Step-by-step explanation:

$\frac{x + 4}{3 {x}^{2} - 12x - 96} = \frac{x + 4}{3( {x}^{2} - 4x - 32) } = \frac{x + 4}{3(x - 8)(x + 4)}$

$= \frac{1}{3(x - 8)} = \frac{1}{3x - 24}$

8 0

2 years ago

For every increase one on the ritcher scale an earthquake is 10 times more powerful which of the following models the situation

Zigmanuir [339]

Answer:

D. Exponential Growth.

Step-by-step explanation:

Suppose the equation is y = 10^x which is an exponential function.

When x = 1 , y = 10, when x = 2, y = 10^2 = 100, when x = 3, y = 10^3 = 1000 which is 10 times more powerful for each unit increase of x.

The answer is Exponential growth.

7 0

3 years ago