3 years ago

Factor each trinomial completely. 4x^2 - 25b^2 and x^2 - 81

Mathematics

1 answer:

GenaCL600 [577]3 years ago

8 0

Step-by-step explanation:

4x2 - 25b2

We can solve it by the squares so

(2x - 5b) (2x + 5b)

2) x2 - 81

The same case is here so

(x - 9) (x + 9)

You might be interested in

The difference between 12 and ten times a number is -28

aev [14]

Answer:

Step-by-step explanation:

$n-\text{the number}\\\\12-10n=-28\qquad|\text{subtract 12 from both sides}\\\\12-12-10n=-28-12\\\\-10n=-40\qquad|\text{divide both sides by (-10)}\\\\\dfrac{-10n}{-10}=\dfrac{-40}{-10}\\\\\boxed{n=4}$

8 0

2 years ago

What is 2,443,805,567 rounded to the nearest hundred

n200080 [17]

Answer:

2,443,805,600

Step-by-step explanation:

3 0

3 years ago

a circle has a radius of 3 feet. what is the circumference of a bigger circle if the scale factor of the smaller to bigger is 4:

AlexFokin [52]

1:4 is you answer. 4-3 is 1 and you do the same to 7

5 0

3 years ago

What is the slope of the line that passes through:<br> (6,5) and (-1,-4)<br><br><br> Thank You!

My name is Ann [436]

Answer:

$m=\frac{9}{7}$

Step-by-step explanation:

Slope Formula: $m=\frac{y_2-y_1}{x_2-x_1}$

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>:

$m=\frac{-4-5}{-1-6}$

$m=\frac{-9}{-7}$

$m=\frac{9}{7}$

6 0

3 years ago

HELP PLS!!! make sure to submit a pic of the graph!<br> Graph the piecewise function.

Ad libitum [116K]

Answer:

I cant graph on here

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers