3 years ago

The following is PreCal 11, please give me help... Factor this: x^2 + 4xy + 4y^2 - 4z^2

1 answer:

5 0

Since both terms are perfect squares, factor using the difference of squares formula.

a^2- b^2= (a+b) (a-b) where a=x+2y and b=2z

(x+2y+2z) (x+2y-2z)

You might be interested in

Which triangles could you use the HL Theorem to prove that Δ 1 = Δ 2?

UNO [17]

Number 3. I think so.

7 0

3 years ago

Read 2 more answers

Find the measure of angle P in the triangle below.

kykrilka [37]

Answer:

Step-by-step explanation:

Sin (angle p) = 48/60 = 4/5 = 0.8

angle p = sin∧-1 0.8 = 53.13010235

6 0

3 years ago

Read 2 more answers

For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

Trava [24]

11 = 1.375 * 8
22 = 1.375 * 16
33 = 1.375 * 24
Therefore y varies directly with x.
Answer: C ) yes; y = 1.375 x

7 0

4 years ago

The most accurate estimation 5+4

MariettaO [177]

The most accurate "estimation" for 5+4 is um... 9

4 0

3 years ago

From a boat on the lake, the angle of elevation to the top of a cliff is 26°1'. If the base of the cliff is 205 feet from the bo

e-lub [12.9K]

First off hmm <span>26°1' is just 26 degrees and 1 minute

there are 60 minutes in 1 degree, so 1minute is just 1/60 degrees
so </span>26°1' is 26° + (1/60)° or 26.1667 rounded up, since 1/60 is a recurring unit

alrite... so hmm, check the picture below

make sure your calculator is in Degree mode.

8 0

3 years ago