All categories

3 years ago

Multiplying by a conjugate gives a rational number because (a + b)(a - b.= _____.

Mathematics

1 answer:

Usimov [2.4K]3 years ago

7 0

Use foil.

(a+b)(a–b)
a^2 -ab +ab -b^2
a^2 – b^2

Hope I helped :)

You might be interested in

Let the graph of g be a translation 3 units up, followed by a vertical stretch by a factor of 2 and a reflection in the x-

Keith_Richards [23]

Answer:

The answer is $g(x)= -6x(x-1)+3$

Step-by-step explanation:

we know that f(x) is written as $3x^{2}-3x$

to show that the graph is being translated up, vertically stretching, and reflecting across the x axis, we need to factor the function.

$f(x)= 3x^{2}-3x \\ 3x(x-1)\\$

now we can incorporate the changes to this graph.

multiply 3x by 2 and -1. (2 for a stretch and -1 for a reflection).

$-6x(x-1)$

tack on the +3 to show a translation of 3 units up.

$-6x(x-1)+3$

therefore, $g(x)= -6x(x-1)+3$

hope this helps!

5 0

3 years ago

3. 24 +13

Elodia [21]

Answer:

Step-by-step explanation:

??!?!?!?!?!?! don't know what'cha mean

5 0

3 years ago

What is the measure of

Alona [7]

Yeh provide more info

7 0

3 years ago

Type the correct answer in the box. Use numerals instead of words.

Stolb23 [73]

Step-by-step explanation:

Type the correct answer in the box. Use numerals instead of words.

The graphs of functions f and g are shown.

Graph shows 2 functions. First curve f begins close to Y-axis in quadrant 3 and rises through (1, 0), (4, 2), (8, 3) in quadrant 1. Second curve g begins close to Y-axis in quadrant 3 and rises through (1, 0), (4, 4), and (8, 6) in quadrant 1.

Function g is defined as . What is the value of k?

The value of k is

(1,0)

3 0

2 years ago

Find the difference between the highest and lowest number 0 and 7

rewona [7]

What does this question even mean?

3 0

4 years ago