3 years ago

What is (x+3)(x-3) in standard form ?

Mathematics

1 answer:

Scilla [17]3 years ago

6 0

Answer:

x² - 9

Step-by-step explanation:

(x + 3)(x - 3)

= x(x - 3) + 3(x - 3) Distributive property

= x² - 3x + 3x - 9

= x² +( -3x + 3x) - 9 Associative

= x² + 0x - 9 Addition

= x² - 9

You might be interested in

How many 5/8 pounds are in 16

Aleks [24]

Here ur asked to divide 16 by 5/8:
16/1 ÷ 5/8
find the reciprocal of the divisor (5/8) which means to flip, and then multiply it by 16/1:
16/1 X 8/5 = 128/5, now change it into a mixed number.
25 3/5

6 0

4 years ago

Put the following equation of a line into slope-intercept form, simplifying all fractions.

solong [7]

Answer:

y = 3x - 1

Step-by-step explanation:

3 0

3 years ago

1. Solve 2r - 15 = -9r + 18.

cupoosta [38]

Answer:

Step-by-step explanation:

11r = 33

r = 3

7 0

3 years ago

Read 2 more answers

How do i get a equation that equals 24 using the numbers 8 3 5 and 1 with a 24 card using multiplication negative times division

ElenaW [278]

Answer:

[(8-3)×5]-1=24

Step-by-step explanation:

[(8-3)×5]-1=24

[(5)×5]-1=24

[5×5]-1=24

[25]-1=24

25-1=24

24=24

3 0

4 years ago

Read 2 more answers

Elizabeth brought a box of donuts to share. there are two-dozen (24) donuts in the box, all identical in size, shape, and col

34kurt

Jelly filled donut
$\frac{3}{24} = \frac{1}{8}$
Custard filled donut
$\frac{11}{24}$
After eating a jelly filled donut, total donut equals to 23, instead of 24.

Probability =
$\frac{1}{8} \times \frac{11}{23} = \frac{11}{184}$

Hope this helps. - M

7 0

4 years ago