All categories

3 years ago

Perform the indicated operation. (3a2 - 7xy)(3a2 + 7xy)

Mathematics

2 answers:

Naily [24]3 years ago

8 0

(3a² - 7xy)(3a² + 7xy) =

= (3a²)² - (7xy)²

= 9a⁴ - 49x²y²

Use

a² - b² = (a - b)(a + b)

raketka [301]3 years ago

8 0

Answer:

9a^4 - 49x^2y^2.

Step-by-step explanation:

(3a^2 - 7xy)(3a^2 + 7xy)

This is example of the difference of 2 squares:

(a + b)(a - b) = a^2 - b^2, so the answer is:

(3a^2)^2 - (7xy)^2

= 9a^4 - 49x^2y^2.

You might be interested in

Solve for X. 3/4x+7/8=4 1/4 Enter your answer as a mixed number in simplest form in the box.

neonofarm [45]

Step-by-step explanation:

$\frac{3}{4} x + \frac{7}{8} = 4 \frac{1}{4}$

$\frac{3}{4} x = \frac{17}{4} - \frac{7}{8}$

$\frac{3}{4} x = \frac{34}{8} - \frac{7}{8}$

$\frac{3}{4} x = \frac{27}{8}$

$3x \times 8 = 27 \times 4$

$24x = 108$

$x = \frac{108}{24}$

$x = \frac{9}{2}$

6 0

2 years ago

Calculate the finance charge and new balance using the previous balance method.

vazorg [7]

Answer:

en español por qué no entiendo tu pregunta porfa

4 0

3 years ago

Need math help for this

Burka [1]

Answer:

<h2>In the attachment</h2>

Step-by-step explanation:

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

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

m - slope

(x₁, y₁) - point

We have the equation:

$y-5=-\dfrac{2}{3}(x+9)\\\\y-5=-\dfrac{2}{3}(x-(-9))$

Therefore we have

the slope m = -2/3

and the point (-9, 5)

A slope

$m=\dfrac{rise}{run}$

rise = -2

run = 3

From the point (-9, 5) ⇒ 2 units down and 3 units to the right.

7 0

3 years ago

In the figure, polygon ABCD is transformed to create polygon A'B'CD

zloy xaker [14]

Dilation by a factor of 2

3 0

3 years ago

Read 2 more answers

Solve for x (13x + 2) (5x - 7) (3x - 4)<br><br><br> Thank you

Law Incorporation [45]

$\huge \bf༆ Answer ༄$

As we know, sum of interior angles of a triangle is 180°

that is ~

$\sf13x + 2 + 5x - 7 + 3x - 4 = 180$

$\sf21x - 9 = 180$

$\sf21x = 180 + 9$

$\sf x = \dfrac{189}{21}$

$\sf x = 9 \degree$

Hence, value of x is 9°

5 0

2 years ago

Read 2 more answers