All categories

3 years ago

Multiply (9x+2y)(9x-2y)

Mathematics

2 answers:

Gala2k [10]3 years ago

6 0

Hi there!

Here are all the steps into multiplying these 2 parentheses :

(9x + 2y) × (9x - 2y)

9x × 9x = 81x²

9x × -2y = -18xy

2y × 9x = 18xy

2y × -2y = -4y²

81x² - 18xy + 18xy - 4y²

-18xy + 18xy = 0

Your answer is: 81x² - 4y²

There you go! I really hope this helped, if there's anything just let me know! :)

Alex_Xolod [135]3 years ago

3 0

<h2>Answer- 81x² - 4y²</h2>

All the steps listed below

(9x + 2y) × (9x - 2y)

9x × 9x = 81x²

9x × -2y = -18xy

2y × 9x = 18xy

2y × -2y = -4y²

81x² - 18xy + 18xy - 4y²

-18xy + 18xy = 0

You might be interested in

If you’re correct I’ll give u brainlist!!

SashulF [63]

Answer:

Alternate interior angles theorem

Step-by-step explanation:

Alternate interior angles theorem

4 0

3 years ago

Read 2 more answers

Simplify: 16z8-23z8 enter the original expression if it can't be simplified

inn [45]

Answer:

The simplified version of that equation would be $-7z^{8}$ .

Step-by-step explanation:

Since $16z^{8}$ and $23z^{8}$ have the same exponent and variable, we can combine them normally.

$16z^{8}$ - $23z^{8}$ = $-7z^{8}$

4 0

3 years ago

some poeple where asked which there favourite school subject was, from a choiceof maths, english and science. how many people in

Sedaia [141]

Answer:

IS THERE MORE TO THE PROBLEM? NOT ENOUGH INFORMATION IS GIVEN

Step-by-step explanation:

5 0

3 years ago

Find the value of x. Round to the nearest tenth.

Sphinxa [80]

Answer:

14.86854, or 15

Step-by-step explanation:

3 0

2 years ago

If the point (4,-2) is included in a direct variation relationship, which point also belongs in this direct variation? A. (-4,2)

IceJOKER [234]

Answer:

(-4,2) belongs in this direct variation.

Step-by-step explanation:

Let the direct variation relationship is expressed by the equation y = mx ........ (1), where x and y are in direct variation and k is the variation constant.

Now, the point (4,-2) is included in the direct variation relationship, then from equation (1) we get, -2 = 4m

⇒ $m = - \frac{1}{2}$

Therefore, the equation (1) becomes $y = - \frac{1}{2}x$

⇒ x + 2y = 0 ......... (2)

Now, from the given four options only the point (-4,2) satisfies the relation (2).

Hence, (-4,2) belongs in this direct variation. (Answer)

5 0

3 years ago