3 years ago

Expand. If necessary, combine like terms. (x+3)(x – 3) = ?

Mathematics

2 answers:

zhannawk [14.2K]3 years ago

8 0

Answer:

i did it on khan

Step-by-step explanation:

its x^2=9

Kobotan [32]3 years ago

5 0

Step-by-step explanation:

multiply it

x²-3x+3x-9=0

x²-9=0

x²=9

square root both side we get

x=3

You might be interested in

What is the exact volume of a sphere that has a radius of 7.5 ft?<br><br> _____pi ft^3

mario62 [17]

Sphere formula: <u></u> $\frac{4}{3} \pi x^{3}$
$\frac{4}{3} \pi 7.5^{3}$
$\frac{4}{3} 421.875 \pi$
562.5 $\pi$
V≈1767.15

3 0

4 years ago

Read 2 more answers

A single-serving bag of trail mix has 10 raisins, 12 cashews, 8 peanuts, 2 Brazil nuts, 10 pumpkin seeds, and 8 dried cranberrie

EastWind [94]

Answer:

The probability is 1/5, or 20%

Step-by-step explanation:

There are 40 total items in the bag, and 8 of them are peanuts.

$\frac{8}{40}$ simplified is $\frac{1}{5}$

3 0

3 years ago

Read 2 more answers

A 2-column table with 8 rows. The first column is labeled x with entries negative 6, negative 5, negative 4, negative 3, negativ

fenix001 [56]

Answer:

Step-by-step explanation:

The only place that the function is increasing is [-3, -1] (learn your interval notation). At x = -3, y = -11; at x = -2, y = -6 (-6 is greater than -11); and at x = -1, y = -1 (-1 is greater than -6). The next x value, 0, returns a y value of -2. But -2 is less than -1, the value before it, so it begins deceasing again at x = 0.

4 0

3 years ago

Read 3 more answers

4a + 9=(-9+30-25) B.

svlad2 [7]

4a+9=(-9+30-25). 4a+9=30-34. 4a+9=-4. 4a=-13. A=-3.25 :)

7 0

3 years ago

Find the rational number that does not lie between 5/12 and 3/4

Irina18 [472]

Answer:

7/8