3 years ago

Select the correct answer. Which expression is equivalent to this polynomial? 9x^2 - 4

Mathematics

1 answer:

liberstina [14]3 years ago

3 0

Step-by-step explanation:

Given expression is :

$9x^2-4$

We can write it as :

$(3x)^2-2^2$

Now using identity : $a^2-b^2=(a-b)(a+b)$

Here, a = 3x and b = 2

So,

$(3x)^2-2^2=(3x-2)(3x+2)$

Hence, the given expression is equivalent to (3x - 2)(3x + 2) .

You might be interested in

Liz flips a coin 40 times. The coin lands heads up 12 times and tails up 28 times. Complete each statement. The theoretical prob

zavuch27 [327]

Answer:

so you takeway 40 by 28 you get 12+12=24%

3 0

2 years ago

Read 2 more answers

How many quarts in a gallon

sukhopar [10]

4 quarts are in a single gallon

7 0

3 years ago

Read 2 more answers

I NEED THIS BADLY <br> WILL MARK BRAINLYIST

stiks02 [169]

What’s the question?

5 0

2 years ago

Define an action adder :: io () that reads a given number of integers from the key board, one per line, and displays their sum.

aleksandrvk [35]

The program is an illustration of loops

<h3>What are loops?</h3>

Loops are program statements that are used to perform repetition

<h3>The main program</h3>

The program written in Python, where comments are used to explain each line is as follows:

#This initializes sum to 0

summ = 0

#This gets input for the first number

num = int(input())

#This is repeated while num is not -1

while num!= -1:

#This calculates the sum

summ+=num

#This gets input for the num

num = int(input())

#This prints the sum

print(summ)